Papers - ISHINO Yojiro
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Flow features of underexpanded microjets emerging from a round convergent nozzle Reviewed
Tashiro, T., Fukunaga, R., Utsunomiya, D., Nakao, S., Miyazato, Y., Ishino, Y.
Experiments in Fluids 64(3) 2023年 64 ( 3 ) 2023
Language：English Publishing type：Research paper (scientific journal)
Density measurements of underexpanded microjets that emerge from a round convergent nozzle with an inner diameter of 1 mm at the exit are taken using rainbow schlieren deflectometry to nonintrusively capture an extensive region from the nozzle exit to a downstream location of twenty times the nozzle exit diameter. Flow visualizations of the microjets are carried out at nozzle pressure ratios (NPRs) of 3.0, 4.0, 5.0, 6.0, and 7.0 and corresponding fully expanded jet Mach numbers (M-j) of 1.36, 1.56, 1.71, 1.83, and 1.93, where the NPR can be defined as the ratio of the stagnation pressure upstream of the nozzle to the back pressure. The three-dimensional density fields of the microjets are reconstructed at a spatial resolution of approximately 4 mu m by the Abel inversion technique based upon the assumption of axisymmetric density fields. The flow topology of the near-field shock structure for each NPR is demonstrated with an elevated view of the density field, including the jet central axis. The location and flow Mach number of the first local minimum in the density profile along the jet central axis are experimentally provided for the first time as a function of the NPR to propose an empirical relation. An approximate expression for the flow Mach number on the jet central axis from the nozzle exit to the location where the isentropic process is established is also derived against the streamwise distance. In addition, the supersonic length of a shock-containing microjet, which is defined as the distance along the jet central axis from the nozzle exit to the location farthest downstream at which there exists a local flow Mach number of unity, is acquired from the density profile along the jet centerline and compared quantitatively with the experimental data from previous Pitot probe surveys as well as previous empirical relations. Furthermore, the microjet density fields from rainbow schlieren deflectometry are mutually compared with those from previous Mach-Zehnder interferometry under the same nozzle to investigate the effects of nonintrusive techniques on the density profiles along three representative locations: the jet centerline, intermediate line, and lipline.
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Microscopic Image Diagnostics with Visible Emission Light for Self-burning Surface Temperature Distribution of CFRP (Carbon Fiber Reinforced Plastic) in Oxygen Reviewed International journal
Yojiro Ishino. Rion Ito
Proceedings of the 13th Pacific Symposium on Flow Visualization and Image Processing 1 - 5 2022.08
Authorship：Lead author, Corresponding author Language：English Publishing type：Research paper (international conference proceedings)
Carbon Fiber Reinforced Plastic(CFRP) has been widely used in variety industries because of its high strength-density ratio. Therefore disposal method of waste CFRP should be considered in advance now. We have been proposed a combustion incineration of carbon fiber(CF) residue after recycle use. However, carbon fiber residue is almost impossible to be burned out by even high temperature burnt gas because of extremely high melting point of carbon fiber and a low oxygen concentration in burnt gases[1].
In this study, self-sustained combustion of carbon fiber in oxygen has been reported. In order to obtain information of the self-sustaining mechanism of the combustion, in this paper, a convenient optical technique to acquire the 2D distribution of high surface temperature of glowing solid material was conducted.
In this technique, magnified thermographic view of the high temperature specimen was provided by comparison between RGB brightness information of conventional photograph of the visible light emission of the surface and previously-calculated values from Planck's law and the spectral sensitivity of the camera system.
In this paper, first, accuracy of the method was verified by comparison between the 2D temperature distribution result of a glowing fine (0.5 mm dia.) graphite rod in burnt gas of a propane-air premixed laminar flame and its estimated temperature distribution measured by PR-type thermocouple and compensated by Kaskan's method. Next magnified instantaneous 2D temperature diagnostics of self-burning carbon fiber bundle in oxygen was made. The 2D surface temperature distribution result gives very high temperature over 2900 K on carbon fiber surface in in-oxygen combustion incineration. -
Multi-Schlieren 3D-CT Measurements of Instantaneous Equivalence Ratio Distributions of a Premixed Gas Field Based on Modified Refractive Index Reviewed
NAZARI, Ahmad Zaid, ISHINO, Yojiro, KONDO, Harumi, MOTOHIRO, Takanori, YAMADA, Ryoya and ITO, Fumiya
Journal of the Combustion Society of Japan ( 1910 ) 1 - 9 2020.11
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：日本燃焼学会
In quantitative measurements and investigations, "equivalence ratio" and "refractive index" are the most significant parameters in combustion flow fields. Experimental and analytical studies were performed to understand the relation between equivalence ratio and refractive index in flow fields. A "universal relationship" between the refractive index of a premixed gas of fuel and air and its equivalence ratio has been established in this study. Through this relationship, we can calculate the equivalence ratio of any premixed gas (except those of light fuels) from its refractive index using a unique coefficient. The uniqueness of the relation coefficient enables us to obtain the equivalence ratio of even a multi-fuel premixed gas from its refractive index. In this study, the novel relationship is applied to a non-scanning 3D-CT (computerized tomography) technique using a multi(20)-directional quantitative schlieren optical system with a flashlight source. Instantaneous equivalence ratio distributions of a dual-fuel premixed gas flow with two jets of ethanol/air and propane/air mixtures are measured by CT-reconstruction. Good agreement was observed between the CT-reconstructed data and the proposed comprehensive relation.
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Multi-Schlieren CT Measurements of Supersonic Microjets from Circular and Square Micro Nozzles Reviewed International journal
Ahmad Zaid Nazari, Yojiro Ishino, Yuta Ishiko, Fumiya Ito, Harumi Kondo, Ryoya Yamada, Takanori Motohiro, Yoshiaki Miyazato, Shinichiro Nakao
Journal of Flow Control, Measurement & Visualization 8 77 - 101 2020.05
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：Scientific research publishing
Instantaneous three-dimensional (3D) density distributions of a shock-cell structure of perfectly and imperfectly expanded supersonic microjets escaping into an ambient space are measured. For the 3D observation of supersonic microjets, non-scanning 3D computerized tomography (CT) technique using a 20-directional quantitative schlieren optical system with flashlight source is employed for simultaneous schlieren photography. The 3D density distributions data of the microjets are obtained by 3D-CT reconstruction of the projection’s images using maximum likelihood-expectation maximization. Axisymmetric convergent-divergent (Laval) circular and square micro nozzles with operating nozzle pressure ratio 5.0, 4.5, 4.0, 3.67, and 3.5 have been studied. This study examines perfectly expanded, overexpanded, and underexpanded supersonic microjets issued from micro nozzles with fully expanded jet Mach numbers Mj ranging from 1.47 - 1.71, where the design Mach number is Md = 1.5. A complex phenomenon for free square microjets called axis switching is clearly observed with two types “upright” and "diagonal" of “cross-shaped”. The initial axis-switching is 45˚ within the first shock-cell range. In addition, from the symmetry and diagonal views of square microjets for the first shock-cells, two different patterns of shock waves are viewed. The shock-cell spacing and supersonic core length for all nozzle pressure ratios are investigated and reported.
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Quantitative Schlieren Image-Noise Reduction Using Inverse Process and Multi-Path Integration Reviewed International journal
Ahmad Zaid Nazari, Yojiro Ishino, Fumiya Ito, Harumi Kondo, Ryoya Yamada, Takanori Motohiro, Yu Saiki, Yoshiaki Miyazato, Shinichiro Nakao
Journal of Flow Control, Measurement & Visualization 8 ( 2 ) 1 - 25 2020.04
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：Scientific Research Publishing
This report deals with introducing two new techniques based on a novel concept of complex brightness gradient in quantitative schlieren images, "inverse process" and "multi-path integration" for image-noise reduction. Noise in schlieren images affects the projections (density thickness) images of CT (computerized tomography). One spot noise in the schlieren image appears in a line shape in the density thickness image. Noise effect like an infectious disease spreads from a noisy pixel to the next pixel in the direction of single-path integration. On the one hand, the noise in the schlieren image reduces the quality of the image and quantitative analysis and is undesirable, on the other it is unavoidable. So, the importance of proper noise reduc-tion techniques seems essential and tangible. In the present report, a novel technique "multi-path integration" is proposed for noise reduction in projections images of CT. Multi-path integration is required schlieren brightness gradient in two orthogonal directions. The 20-directional quantitative schlieren optical system presents only images of schlieren brightness in the horizontal gradient and another 20-directional optical system seems necessary to obtain vertical schlieren brightness gradient, simultaneously. Using the "inverse process" a new technique enables us to obtain vertical schlieren brightness gradient from horizontal experimental data without the necessity of a new optical system and can be used for obtaining any optional direc-tions of schlieren brightness gradient. Recently, we presented the "inverse process" technique but in a different way than this time. In previous work, the phan-tom(virtual) data of schlieren images are obtained by the "inverse process" and used to evaluate noise reduction technique while in the new "inverse process" technique actual experimental data is used for reproducing other directions of schlieren brightness gradient.
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Three-dimensional reconstruction of a microjet with a Mach disk by Mach-Zehnder interferometers Reviewed International journal
S. Sugawara, S. Nakao, Y. Miyazato, Y. Ishino and K. Miki
J. Fluid Mech. 893 A25-1 - A25-26 2020.04
Language：English Publishing type：Research paper (scientific journal)
DOI： 10.1017/jfm.2020.217
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THREE-DIMENTIONAL MEASUREMENT ON THERMAL STRUCTURE OF SIX CLUSTERED METHANE-AIR DIFFUSION MICROFLAMES Reviewed International journal
Yuta Uchida, Harumi Kondo, Zhaojin Diao, Taro Hirasawa, Michael Winter, Yojiro Ishino, Kozo Saito
Proceedings of The Second Pacific Rim Thermal Engineering Conference PRTEC-24221 1 - 5 2019.12
Language：English Publishing type：Research paper (international conference proceedings) Publisher：ASTFE, JSME, KSME
The unique and complicated three-dimensional flame structure of clustered six diffusion methane-air microflames was investigated in the present study. The burner consisted of six micro-nozzles for methane with a diameter of 0.23 mm arranged in a circle surrounding a central nozzle for air with a diameter of 0.7 mm. The burner established six interacting microflames under the conditions of methane total flow rate of 20 cm3 / min and air flow rate of 30 cm3 / min. Schlieren CT method was applied to obtain the three-dimensional distribution of modified refractive index inside and outside the flame structure of the clustered diffusion microflames. The correspondence of flame structure to the distribution of the modified refractive index was confirmed.
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Study on Combustion Incineration of CFRP (SEM Observations of Nano Level Sharpening of Carbon Fiber Residue Tips and Temperature Measurements Based on Heat Radiation Images) International journal
Y. Ishino, M. Tabata,S. Onuma
Proceedings of the International Workshop on Environmental Engineering 2019 (IWEE2019) 1 - 2 2019.06
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings) Publisher：The Japan Society of Mechanical Engineers, Environmental Engineering Division
Carbon fiber, contained in CFRP(carbon fiber rainforced plastic), is almost impossible to be burned out by even high temperature burnt gas because of extremely high melting or sublimation point of carbon fiber and a low oxygen concentration in burnt gases. In this study, first, oxygen nozzle of 10 mm x 30 mm exit size, which equipped fuel (propane) pipe of inner diameter of 0.8 mm for a pilot ignition flame, has been introduced to observe the in-oxygen-combustion behaiviors of test pieces of (i) CFRP slender plate (2 mm wide and 1 mm thickness), (ii)slender plate of CFRP-P (Plastic removed CFRP), "G"FCRs("Graphite" Fine Cylindrical Rod) of diameters of 0.38 mm, 0.55 mm and 0.72 mm.
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CT (COMPUTER TOMOGRAPHY) MEASUREMENT OF 3D DENSITY DISTRIBUTIONS OF FLAME: OBTAINING VERTICAL GRADIENT SCHLIEREN BRIGHTNESS FROM HORIZONTAL GRADIENT FOR IMAGE-NOISE REDUCTION Reviewed International journal
Ahmad Z. Nazari, Yojiro Ishino, Ryoya Yamada, Takanori Motohiro, Fumiya Ito, Harumi Kondo, Yoshiaki Miyazato, Shinichiro Nakao
Proceedings of the 4th Thermal and Fluids Engineering Conference (TFEC) TFEC-2019 ( 27746 ) 1 - 10 2019.04
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings) Publisher：American Society of Thermal and Fluids Engineers
Using a delicate multi-directional quantitative schlieren optical system, the 20-directional observation of high-speed premixed turbulent flame, non-uniform density flow, by employing non-scanning 3D-CT (three-dimensional computer-tomography) technique has been conducted. The 3D density distributions data of target flame by using ML-EM (Maximum Likelihood-Expectation Maximization) an appropriate CT (computer-tomography) algorithm are successfully reconstructed. In the previous report, a novel technique "multi-path integration" is proposed for noise reduction in projections (density thickness) images of CT (computer-tomography). Multi-path integration is required schlieren brightness gradient in both horizontal (x-directional) and vertical (z-directional) directions, or in other words, in two orthogonal directions (e.g. horizontal and vertical or two perpendicular diagonal directions). The 20-directional quantitative schlieren optical system presents only images of schlieren brightness in the horizontal gradient (x-directional) and another 20-directional optical system seems necessary to obtain vertical (z-directional) schlieren brightness gradient, simultaneously. In the present investigation, the report deals with introducing a new technique for obtaining vertical schlieren brightness gradient from horizontal experimental data without the necessity of a new optical system. This new approach is a simple and inexpensive solution. First, for a deep understanding of complex schlieren brightness, a numerical simulation is performed. Next, the initial density thickness (Dt) images are obtained from images of schlieren brightness in the horizontal gradient (x-directional). Finally, using inverse process from density thickness (Dt) images, the vertical (z-directional) and diagonal schlieren brightness gradient data of target flame successfully obtained. The mentioned technique can be used for obtaining any optional directions of schlieren brightness gradient.
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Characterization of Six Clustered Methane-Air Diffusion Microflames through Spectroscopic and Tomographic Analysis of CH* and C2* Chemiluminescence International coauthorship
Zhaojin Diao, Michael Winter, Taro Hirasawa, Yuichi Kato, Yojiro Ishino, and Kozo Saito
Experimental Thermal and Fluid Science 102 20 - 27 2018.12
Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevior
The current study presents an emission spectroscopic investigation of clustered microflames established on a burner consisting of six micro fuel nozzles surrounding a center air nozzle which has been designed for flame synthesis and characterization of microflames. We conducted the spectrally resolved measurement of chemiluminescence of C2* and CH* and compared these results to a tomographic method applied to filtered emission measurements of CH* emission which can yield spatially resolved three dimensional mapping of the flame front. The analysis of the spatial distribution of the integrated band emission of C2* and the CH* showed that the emission of both species is generated in the same locations in the flame which are the thin flame sheets shown in the tomography results of CH*. The ratio of the C2* and the CH* emission from the emission spectroscopy measurements was used to determine a local corresponding equivalence ratio through empirically derived correlations for premixed flames reported in literature. The resulting equivalence ratio equals one when the flame zone established at the boundary between fuel and air, indicating that the diffusion dominated flame zones are established. Under certain nozzle pitch and flow rate conditions, the equivalence ratio above the center air nozzle inside the merged flame became significantly greater than one, which indicates a fuel rich premixed type flame zone being established.
To determine distributions of rotational and vibrational temperatures throughout the entire flame, we used the spectrally resolved emission from C2* and CH*. The temperature associated with vibrational excitation was different for both species but remained constant throughout the entire flame region and was found no representation of the flame temperature but an artifact of the combustion reactions producing the chemiluminescence. The rotational temperature of di-atomic molecules, however, equilibrates rather quickly with the translational temperature and can accurately represent the gas-dynamic temperature of the flame. The temperature distributions found from the two species agreed qualitatively, the CH* temperature was consistently higher than the C2* temperature by about 200 K. Spatial resolution was assigned to the results from the spectroscopic measurements through a comparison with the tomographically analyzed images of the CH* chemiluminescence. -
CT ( COMPUTER TOMOGRAPHY ) MEASUREMENT OF 3D DENSITY DISTRIBUTIONS OF HIGH-SPEED PREMIXED TURBULENT FLAMES ( MULTI-PATH INTEGRATION IMAGE-NOISE REDUCTION TECHNIQUE BASED ON NOVEL CONCEPT OF COMPLEX BRIGHTNESS GRADIENT IN QUANTITATIVE SCHLIEREN IMAGES ) Reviewed International coauthorship
A. Z. Nazari, Y. Ishino, R. Yamada, T. Motohiro, F. Ito, H. Kondo, Y. Miyazato, S. Nakao
18th International Symposium on Flow Visualization 1 ( 1 ) 1 - 13 2018.06
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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A Novel Rotational Internal Combustion Engine with a Single-Lobe Peritrochoid Rotor (Design Fundamentals and Motoring Test of a Prototype Engine) Reviewed International journal
Yojiro ISHINO, Tomoya NIWA
Transactions of the JSASS/Aerospace Technology Japan 15 ( ) 117 - 126 2018.03
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
A novel rotational internal combustion engine is invented and investigated as an auxiliary power unit (APU) of aircraft and range extension power unit for electric automobiles. For the intended applications, IC engines are required to have vibration-free characteristics. There are no reciprocating components in the present engine, resulting in vibration-free operation. This engine mainly consists of a rotor casing, a rotor and a crankshaft. The rotor is shaped in a single-lobe peritrochoid (S.L.P.) curve. The rotor is turned using a crankshaft eccentricity e and self-rotation in the counter-direction is achieved using phasing gears. The rotor casing shape has two cavities that define the envelope curve of the rotating single-lobe peritrochoid rotor. The space between the rotor and casing is where the processes for the working gas are performed: intake, compression, ignition, expansion and exhaust. The intake of premixed air/fuel gas and exhaust of burnt gas are controlled by rotary valves installed on the combustion recesses of the rotor-casing. The combustion recesses are equipped with spark-electrodes for ignition. One of the advantages of this engine compared to Wankel rotary engines and a previous engine invented by authors is easy and reliable sealing of the working gas. In this engine configuration, a sealing component is only installed on the waist section of the rotor-casing, instead of complex sealing system used for the rotor in the case of Wankel engines, resulting in higher efficiency by reducing the leakage of working gas.
In this paper, first the configuration and geometries of this engine are described. Next a prototype engine is introduced and the cyclic behavior of the working process of the engine is explained. The performance of the prototype engine driven by an electric motor is also shown. -
Schlieren CT Measurement of 3D Density Distributions of Flame Kernels of Spark-Ignited Direct-Injection of Free, Cavity-Guided and Plane-Guided Fuel Jets Reviewed International journal
Ahmad Zaid Nazari, Yojiro Ishino, Takanori Motohiro, Ryoya Yamada, Yuta Ishiko, Yu Saiki
11th Asia-Pacific Conference on Combustion 1 - 4 2017.12
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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COMPUTER FLOW VISUALIZATION OF UNDEREXPANDED JETS FROM AXISYMMETRIC SUPERSONIC MICRO NOZZLES Reviewed International journal
H. FUKUDA, H. MAEDA, D. ONO, S. NAKAO, Y. MIYAZATO, Y. ISHINO
11th Pacific Symposium on Flow Visualization and Image Processing 1 - 4 2017.12
Language：English Publishing type：Research paper (international conference proceedings)
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Rainbow schlieren measurements in underexpanded jets from square supersonic micro nozzles Reviewed International journal
Hiroaki Maeda, Hikaru Fukuda, Shinichiro Nakao, Yoshiaki Miyazato, Yojiro Ishino
Experimental fluid mechanics 2017 1 - 6 2017.11
Language：English Publishing type：Research paper (international conference proceedings)
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Study of Fee Jets from Axisymmetric Supersonic Micro Nozzles (Part 1, Quantitative Flow Visualization) Reviewed International journal
Hikaru Fukuda, Shinichiro Nakao, Yoshiaki Miyazato, Yojiro Ishino
14th International Conference on Flow Dynamics 1 - 2 2017.11
Language：English Publishing type：Research paper (international conference proceedings)
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Study of Fee Jets from Axisymmetric Supersonic Micro Nozzles (Part 2, RANS Simulation) Reviewed International journal
Hikaru Fukuda, Shinichiro Nakao, Yoshiaki Miyazato, Yojiro Ishino
14th International Conference on Flow Dynamics 1 - 2 2017.11
Language：English Publishing type：Research paper (international conference proceedings)
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THREE-DIMENSIONAL FLAME STRUCTURE AND CHARACTERISTICS OF HEATING PARTICLES IN METHANE CLUSTERED MICROFLAMES ON SIX FUEL AND ONE AIR JETS Reviewed International coauthorship International journal
Y. Kato, T. Hirasawa, Z. Diao, M. Winter, Y. Ishino
Ninth JSME-KSME Thermal and Fluids Engineering Conference TFEC ( 1321 ) 1 - 4 2017.10
Language：English Publishing type：Research paper (international conference proceedings)
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SCHLIEREN CT MEASUREMENT OF 3D DENSITY DISTRIBUTIONS OF PERFECTLY AND IMPERFECTLY EXPANDED SUPERSONIC MICRO-JETS FROM CIRCULAR AND RECTANGULAR MICRO NOZZLES Reviewed International journal
A. Z. Nazari, Y. Ishino1, Y. Ishiko, T. Motohiro, R. Yamada, Y. Saiki, Y. Miyazato, S. Nakao
The Ninth JSME-KSME Thermal and Fluids Engineering Confference(TFEC9) TFEC ( 1528 ) 1 - 5 2017.10
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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3D Printing of Spark-Ignited Flame Kernels, Experimentally Captured by 3D-Computer Tomography and Multi-Directional Schlieren Photography Reviewed International coauthorship International journal
Yojiro Ishino, Naoki Hayashi, Yuta Ishiko, Kimihiro Nagase, Kazuma Kakimoto, Ahmad Zaid Nazari, Yu Saiki
J. Heat Transfer, Transaction of the ASME 2017.02
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：American Society of Mechanical Engineers
Non-scanning 3D-CT(Computer Tomography) technique employing a multi-directional quantitative schlieren photographic system with flash light source, has been performed to obtain instantaneous density distributions of spark-ignited laminar / turbulent flame kernels. For simultaneous schlieren photography, the custom-made 20-directional schlieren camera was constructed and used. The flame kernels are made by spark ignition for a fuel-rich propane-air premixed gas (flow velocity :1.0 m/s, equivalence ratio :1.4 ). Spark electrodes of 0.4 mm diameter with 1.0 mm gap are used. First, development of laminar flame kernel is indicated in the 1st row high-speed image of top right. 3D printed model of the CT reconstruction result show the spherical shape of flame kernel with a pair of deep wrinkles. The wrinkle is considered to be caused by spark electrodes. Next turbulent flame kernel behind turbulence promoting grid is selected (trubulence intensity 0.26 m/s). Second row high-speed images of top-right show corrugated flame shape. 3D model of CT result expresses the instantaneous 3D turbulent flame kernel shapes. These 3D solid models are 3D-printed as 2 times large size for threshold density level of 0.7 kg/m3.
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Manipulation of Large-Scale Vortical Structures and Mixing in a Coaxial Jet with Miniature Jet Actuators Toward Active Combustion Control Reviewed International journal
Yu Saiki, Shigehiro Tanaka, Shunnya Hattori, Kasumi Nakura, Yojiro Ishino
Flow Turbulence and Combustion 97 ( 4 ) 1127 - 1145 2016.11
Language：English Publishing type：Research paper (scientific journal) Publisher：Springer
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Schlieren 3D-CT Measurement of Instantaneous Density Distributions of the Shock-cell Structure of Under-expanded Supersonic Micro-jet Reviewed International coauthorship International journal
Ahmad Zaid NAZARI, Yojiro ISHINO, Yuta ISHIKO, Yoshiaki MIYAZATO, Shinichiro NAKAO
Prodeedings of 2016 Asia-Pacific International Symposium on Aerospace Technology 1 - 9 2016.10
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
Measurement of instantaneous density distribution of the shock-cell structure of an underexpanded supersonic microjet escaping into an ambient space from an axisymmetric convergent-divergent (Laval) micro nozzle has been conducted. For 3D observation of supersonic microjet, non-scanning 3D-CT technique using a multi-directional quantitative schlieren system with flash light source is employed. In this technique, for simultaneous schlieren photography, the custom-made 20-directional schlieren camera has been constructed and used. This study examines underexpanded supersonic jet from a micro nozzle with nozzle pressure ratio (NPR) 5.0 and plenum chamber pressure (stagnation pressure) 0.505 MPa. This micro nozzle design Mach number is Md = 1.5 and has circular cross-section with an exit diameter of 1000μm. First, the report deals with the density distribution. The density contour plot data of the jet flow is obtained by 3D-CT (Three Dimensional Computer Tomography) reconstruction of the images by MLEM an appropriate CT algorithm. Next, the density distribution data is calculated by formula. Theoretical results based on the theory of Tam (1984) are found to compare favorably with experimental measurement. The measured and calculated results are in acceptable agreement.
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Development and Fundamental Study on a Novel Rotational Internal Combustion Engine with a Single-Lobe Peritrochoid Rotor Reviewed International journal
Yojiro Ishino, Yu Sakai, Tomoya Niwa, Masato Kumano
Prodeedings of 2016 Asia-Pacific International Symposium on Aerospace Technology 1 - 12 2016.10
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
A novel rotational internal combustion engine is invented and investigated for APU(Auxiliary power unit) of aircrafts and range-extender-power-unit for electric automobiles. For the applications, IC engines are required vibration-free characteristics. In the present engine, no reciprocating component is used, resulting in vibration-free operation. This engine mainly consists of a rotor casing, a rotor and a crank shaft. The rotor shapes as single lobe peritrochoid (S.L.P.) curve. The rotor rotates by the crank shaft of eccentricity e and rotates itself in counter-direction by phasing gears. The rotor casing shape having two cavities is defined as envelope curve of the rotating single-lobe peritrochoid rotor. The room between the rotor and casing performs the working processes for working gas; intake, compression, ignition, expansion and exhaust processes. The intake of premixed gas of air and fuel and exhaust of burnt gas are controlled by rotary valves installed on the combustion recesses of the rotor-casing. The combustion recesses are equipped with spark-electrodes for ignition. One of advantages of this engine compared with Wankel rotary engines and a previous engine invented by authors, is easy and reliable sealing of working gas. In this engine configuration, that is, a sealing component is only installed on waist section of rotor-casing, instead of complex sealing system on a rotor in case of Wankel engines, resulting in high efficiency by low-leakage of working gas.
In this paper, first, configuration and geometries of this engine are described. Next the prototype engine is introduced and the cyclic behavior of the working process of this prototype engine is explained. Performance of the prototype engine driven by an electric motor is also shown. -
Rainbow Schlieren Measurements in Underexpanded Jets from Axisymmetric Reviewed International journal
Hikaru FUKUDA, Hiroaki MAEDA, Daisuke ONO，Shinichiro NAKAO, Yoshiaki MIYAZATO, Yojiro ISHINO
Proceedings of The 27th International Symposium on Transport Phenomena(ISTP-27) ISTP27 ( 158 ) 1 - 7 2016.09
Language：English Publishing type：Research paper (international conference proceedings)
The rainbow schlieren deflectometry is applied for the slightly underexpanded jet issued from an axisymmetric supersonic micro nozzle with a design Mach number of 1.5. The nozzle was designed by the axisymmetric method of characteristics to provide uniform and parallel flow at the nozzle exit and it has inner diameters of 922 m and 1000 m at the nozzle throat and the exit, respectively, and a longitudinal length of 1300 m from throat to exit. The experiment was performed at a nozzle pressure ratio of 4.0 and a throat Reynolds number of 5.84 x 104. The jet density field is reconstructed by the image analysis based upon the Abel inversion of experimental data. The density contour map on the cross-section including the jet centerline is displayed to observe the gross features of micro supersonic jets. The vortex-sheet model on the shock cell structure proposed by Tam is used for a quantitative comparison between experiment and theory.
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Schlieren 3D-CT Reconstruction of Instantaneous Ddensity Distributions of Spark-Ignited Flame Kerness of Fuel-Rich Propane-Air Premixture Reviewed International journal
Yojiro Ishino, Naoki Hayashi, Yuta Ishiko, Ahmad Zaid Nazari
Proceedings of the ASME 2016 Summer Heat Transfer Conference HT2016 7423 2016.07
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings) Publisher：ASME
For 3D observation of high speed flames, non-scanning 3D-CT technique using a multi-directional quantitative schlieren system with flash light source, is proposed for instantaneous density distribution of unsteady premixed flames. This "Schlieren 3D-CT" is based on (i)simultaneous acquisition of flash-light schlieren images taken from numerous directions, and (ii) 3D-CT reconstruction of the images by an appropriate CT algorithm. In this technique, for simultaneous schlieren photography, the custom-made 20-directional schlieren camera has been constructed and used. This camera consists of 20 optical systems of single-directional quantitative schlieren system. Each system is composed of two convex achromatic lenses of 50 mm in diameter and 300 mm in focal length, a light source unit, a schlieren stop of a vertical knife edge and a digital camera. The light unit has a flash (9 micro-sec duration) light source of a uniform luminance rectangular area of 1 mm x 1 mm. Both of the uniformity of the luminosity and the definite shape are essential for a quantitative schlieren observation. Sensitivity of the digital cameras are calibrated with a stepped neutral density filter. Target flames are located at the center of the camera. The image set of 20 directional schlieren images are processed as follows. First the schlieren picture brightness is shifted by no-flame-schlieren picture brightness in order to obtain the real schlieren brightness images. Second, brightness of these images is scaled by Gladstone-Dale constant of air. Finally, the scaled brightness is horizontally integrated to form "density thickness images", which can be used for CT reconstruction of density distribution. The density thickness images are used for CT reconstruction by MLEM (maximum likelihood-expectation maximization) CT-algorithm to obtain the 3D reconstruction of instantaneous density distribution. In this investigation, the "density thickness" projection images of 400(H) x 500(V) pixel (32.0 mm x 40.0 mm) are used for 3D-CT reconstruction to produce 3D data of 400(x) x 400(y) x 500(z) pixel (32.0 mm x 32.0 mm x 40.0 mm). The voxel size is 0.08 mm each direction. In this investigation, the target flame is spark-ignited flame kernels. The flame kernels are made by spark ignition for a fuel-rich propane-air premixed gas. First, laminar flow is selected as the premixed gas flow to establish the spherically expanding laminar flame. The CT reconstruction result show the spherical shape of flame kernel with a pair of deep wrinkles. The wrinkle is considered to be caused by spark electrodes. Next turbulent flows behind turbulence promoting grid is selected. The corrugated shape flame kernel is obtained. The schlieren 3D-CT measurements are made for the complicated kernels. CT results expresses the instantaneous 3D turbulent flame kernel shapes.
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3D-CT(Computer Tomography) Measurement of an Instantaneous Density Distribution of Turbulent Flames with a Multi-directional Quantitative Schlieren Camera (Reconstructions of High-speed Premixed Burner Flames with Different Flow Velocities) Invited Reviewed International journal
Yojiro Ishino, Naoki Hayashi, Ili Fatimah Bt Abd Razak, Takahiro Kato, Yudai Kurimoto, Yu Saiki
Flow, Turbulence and Combustion 96 ( 3 ) 819 - 835 2016.04
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
In order to provide a suitable technique for 3D observation of high speed turbulent flames, non-scanning 3D-CT(Computer Tomography) technique using a multi-directional quantitative schlieren system with flash light source, is proposed for instantaneous density distribution of unsteady premixed flames. This "schlieren 3D-CT" is based on (i)simultaneous acquisition of flash-light schlieren images taken from numerous directions, and (ii) 3D-CT reconstruction of the images by an appropriate CT algorithm. In this paper, first, as a preliminary research, 3D-CT reconstruction of non-axisymmetric steady flame is made with a single-directional quantitative schlieren system. Next, with custom-made 20 directional schlieren camera, instantaneous density distributions of a high-speed turbulent flames of nozzle exit velocities of 8.0 and 10.0 m/s has been CT-reconstructed. The 3D-views of the reconstructed flame front shape clearly give the information of the flame structure with fine scale corrugations. Based on the distributions, area-enlargement rates of the flame front area are derived, and investigated.
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3D Printing of Instantaneous Turbulent Flame Shapes, Experimentally Captured by 3D-Computer Tomography and Multi-Directional Schlieren Photography Invited Reviewed International journal
Yojiro Ishino, Naoki Hayashi, Yuta Ishiko, Ili Fatimah Bt Abd Razak, Yu Saiki, Kimihiro Nagase, Kazuma Kakimoto
Transactions of ASME, J. Heat Transfer 138 ( 2 ) 020912-1 2016.02
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：American Society of Mechanical Engineeres
Non-scanning 3D-CT(Computer Tomography) technique employing a multi-directional quantitative schlieren photographic system(top-left picture) with flash light source, has been performed to obtain instantaneous density distributions of high-speed turbulent flames(for reference, the target flame of 8 m/s exit velocity is indicated in the right-top picture). For simultaneous schlieren photography, the custom-made 20-directional schlieren camera was constructed and used. The target turbulent flame is high-speed flames, anchored on the burner of a nozzle exit of 4.2 mm diameter. The image set of 20 directional schlieren images are processed by MLEM CT-algorithm to obtain the 3D reconstruction of instantaneous density distribution. The solid models(bottom picture) of threshold density level of 0.7 kg/m3 are 3D-printed as 4 times large size for detail observations. The average exit velocity of the propane-air mixture of equivalence ratio of 1.1 is set to be 10, 8, 6 and 4 m/s (models from left to right in the bottom picture). The solid models show the complicated shape of the high speed turbulent flames. The flame structure of higher speed flame has fine scale corrugations. This corresponds to the “corrugated flamelets regime” of the Borghi & Peters diagram well.
DOI： 10.1115/1.4032256
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Manipulation of large-scale vortical structures and mixing in a coaxial jet with miniature jet actuators Reviewed International journal
Y. Saiki, S. Tanaka, S. Hattori, K. Nakura, Yojiro Ishino
8th International Symposium on Turbulence, Heat and Mass Transfer (THMT'15) 2015.09
Language：English Publishing type：Research paper (international conference proceedings)
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3D-CT Measurement of Instantaneous Density Distributions of High-Speed Premixed Turbulent Burner Flames with a Multi-Directional Schlieren Camera (Effects of Flow Velocity on 3D Flame Front Shape) Reviewed
Yojiro Ishino, Naoki Hayashi, Ili Fatimah Bt Abd Razak, Yu Saiki
Proceedings of the 1st Thermal and Fluid Engineering Summer Conference, American Society of Thermal and Fluids Engineering TFESC ( 12970 ) 1 - 11 2015.08
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
In present study, in order to provide a suitable technique for 3D observation of high speed turbulent flames, non-scanning 3D-CT technique using a multi-directional quantitative schlieren system with flash light source, is proposed for instantaneous density distribution of unsteady premixed flames. This "Schlieren 3D-CT" is based on (i)simultaneous acquisition of flash-light schlieren images taken from numerous directions, and (ii) 3D-CT reconstruction of the images by an appropriate CT algorithm. For simultaneous schlieren photography, in this experiment, the custom-made 20-directional schlieren camera has been constructed and used. Target flames are located at the center of the camera. The image set of 20 directional schlieren images are processed by MLEM CT-algorithm to obtain the 3D reconstruction of instantaneous density distribution. In this investigation, the target turbulent flame is high-speed burner flames. The burner has a nozzle exit of 4.2 mm diameter. The average flow velocity of the propane-air mixture of equivalence ratio of 1.1 is set to be 4, 6, 8 and 10 m/s. The burner is equipped with a turbulence promoting orifice in the burner tube. In order to anchor the high-speed flame on the burner nozzle, the burner tip has 4 holes for introducing the pilot flames. Results of the 3D-reconstructions indicates that the distributions show the complicated shape of the high speed turbulent flames. It is also found that the flame structure of higher speed flame has fine scale corrugations. This corresponds to the "corrugated flamelets regime" of the Borghi & Peters diagram for premixed turbulent combustion well.
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3D Printing of Instantaneous Turbulnet Flame Shapes, Experimentally Captured by 3D-Computer Tomography and Multi-Directional Schlieren Photography Reviewed
Yojiro Ishino, Naoki Hayashi, Yuta Ishiko, Ili Fatimah Bt Abd Razak, Yu Saiki, Kimihiro Nagase, Kazuma Kakimoto
Proceedings of the 1st Thermal and Fluid Engineering Summer Conference 1 - 1 2015.08
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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3D-CT Measurement of an Instantaneous Density Distribution of a Turbulent Premixed Flame with a Multi-Directional Quantitative Schlieren Camera Reviewed
Yojiro Ishino, Takahiro Kato, Yudai Kurimoto, Yu Saiki
Proceedings of 10th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements 2014.09
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
２０方向から同時撮影可能な定量シュリーレンカメラを設計製作し，それを用いて，吹き出し速度10m/sの高速乱流予混合火炎の密度分布のCT（コンピュータ断層造影）再構成を実施した．その結果，当該火炎の複雑な瞬間構造の三次元データの獲得に成功した．
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Fundamental Design of a Rotational I.C. Engine "Ishino Engine" with no Eccentric Rotational Component Reviewed
Keisuke TESHIMA, Yusaku YAMAMOTO, Hiroyuki FUJII, Yu SAIKI, Yojiro ISHINO
Proceedings of the 2013 Asia-Pacific International Symposium on Aerospace Technology 2013.11
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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Active Control of Methane-Air Coaxial Jet Mixing and Combustion with Arrayed Miniature Jet Actuators Reviewed
Yu SAIKI, Shigehiro TANAKA, Shunya HATTORI, Yojiro ISHINO
79 ( 807 ) 2013.11
Language：Japanese Publishing type：Research paper (scientific journal)
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Development of an Novel Non-eccentric Rotational Engine "Ishino Engine"(Fundamental Configuration and Characteristics) Reviewed
Yojiro Ishino, Keisuke Teshima, Hiroyuki Fujii, Yusaku Yamamoto, Yu Saiki
Proceedings of the 19th Small Engine Technology Conference 2013.10
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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3D-CT Measurement of Premixed Flames Using a Multi-Directional Quantitative Schlieren Optical System (Solo-Measurement of Density and Combined-Measurement of Density and Light-Emission distributions) Reviewed
Yojiro ISHINO, Kenta HORIMOTO, Takahiro KATO, Shoma ISHIGURO, Yu SAIKI
Procedia Engineering 2013.10
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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Study on Novel Non-Eccentric Rotation Internal Combustion Engine (Configurations and Flame Behavior) Reviewed
Yojiro ISHINO, Keisuke TESHIMA, Hiroyuki FUJII, Yusaku YAMAMOTO, Yu SAIKI
Transactions of The JSME, Ser.B 79 ( 805 ) 1805 - 1815 2013.09
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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3D-CT Measurement of Three-Dimensional Density Distribution of Premixed Flames Using a Multi-Directional Quantitative Schlieren Optical System Reviewed
Y.Ishino,K.Horimoto,T.Kato,S.Ishiguro,Y.Saiki
Proceedings of the 7th Asian-Pacific Conference on Aerospace Technology and Science 2013.05
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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A Novel Non-eccentric Rotation I.C. Engine "Ishino Engine" (Fundamental Configuration and Combustion Process) Reviewed
Y.Ishino,K.Teshima,Y.Yamamoto,H.Fujii,Y.Saiki
Proceedings of the 9th Asia-Pacific Conference on Combustion 2013.05
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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Multi-Directional Quantitative Schlieren Observations for 3D-CT Reconstruction of Three-Dimensional Density Distribution of Steady Non-axisymmetric Premixed Flame Reviewed
Y.Ishino,K.Teshima,Y.Yamamoto,H.Fujii, Y.Saiki
Proceedings of the 9th Asia-Pacific Conference on Combustion 2013.05
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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4D-CT Measurement of a Turbulent Premixed Flame by Simultaneous Multi-Directional High-Speed Photography with Multi-Mirror Optical Capture System Reviewed
Yojiro Ishino, Yuya Okita, Yu Saiki, Tahiro Mizokami
Proceedings of The International Symposium on EcoTopia Science’11 2011.12
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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Measurement of time series of Turbulent premixed flame by Multi-mirror optical capture system and 3-D CT Reviewed
Yu SAIKI, Yuya OKITA, Yao XU, Kenta HORIMOTO, Yojiro ISHINO
30 ( 12 ) 81 - 86 2010.12
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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MEASUREMENT OF A LOCAL BURNING VELOCITY OF A TURBULENT PREMIXED FLAME BY SIMULTANEOUS 3D-CT RECONSTRUCTION WITH 40-LENS CAMERA AND STEREOSCOPIC PTV Reviewed
Y. Saiki, Y. Tomida, S. Shiga, Y. Ishino, N. Ohiwa
Proc. of the 8th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements 2010.06
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
Non-scanning 3D computerized tomography (3D-CT) technique (Ishino and Ohiwa(2005), Ishino et al.(2007)) have been proposed and accomplished for the propane/air fuel-rich premixed flames. More-over in this paper, an instantaneous local burning ve-locity of the turbulent premixed flame is evaluated from two 3D-CT volume data of light emission in-tensity with short time-interval of 1.29 ms and a 3D particle track simultaneously taken by stereoscopic PTV(Particle Track Velocimetry).
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副室式燃焼器による準定容乱流予混合燃焼の促進（定容燃焼における燃焼および伝熱促進法と燃焼器内流動の可視化） Reviewed
大岩 紀生，石野 洋二郎，宮田 賢一，小田 次郎，小池 洋一郎，高橋 誠
日本機械学会論文集(B編) 2010.04
Language：Japanese Publishing type：Research paper (scientific journal)
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二次元密度成層界面への二次元渦対衝突過程におけるバロクリニックトルク生成の微小重力実験 Reviewed
石野 洋二郎，齋木 悠，片岡 誠仁，稲葉 耕作，大岩 紀生
日本機械学会論文集(B編) 76 ( 762 ) 2010.02
Language：Japanese Publishing type：Research paper (scientific journal)
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等身大ヒューマノイド型跳躍ロボット用の力学エネルギー蓄積式直動燃焼アクチュエータの開発 Reviewed
石野 洋二郎，齋木 悠，柴田 遼平，大澤 明日菜，前田 一樹，大岩 紀生
日本機械学会論文集(B編) 76 ( 761 ) 2010.01
Language：Japanese Publishing type：Research paper (scientific journal)
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二値密度場の境界領域におけるバロクリニックトルクおよび浮力渦度の生成 Reviewed
石野 洋二郎，齋木 悠，稲葉 耕作，片岡 誠仁，大岩 紀生
日本機械学会論文集(B編) 75 ( 760 ) 2495 - 2503 2009.12
Language：Japanese Publishing type：Research paper (scientific journal)
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Analysis of Vorticity Formation Process in a Density Boundary Layer of Burnt Gas Flow by Discrete Vortex Simulation Reviewed
Y. SAIKI, K. INABA, M. KATAOKA, Y. ISHINO, N. OHIWA
International Workshop on Environment & Engineering Advanced Sustainable Cities, IWEE2009, JapanSociety of Mechanical Engineers, Yokohama, Japan 2009.11
Language：English Publishing type：Research paper (international conference proceedings)
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Experimental Investigation of Vorticity Formation Process in a Density Boundary Layer of Burnt Gas Flow Reviewed
Y. SAIKI, M. KATAOKA, K. INABA, Y. ISHINO, N. OHIWA
International Workshop on Environment & Engineering Advanced Sustainable Cities, IWEE2009, JapanSociety of Mechanical Engineers, Yokohama, Japan 2009.11
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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High-Speed Imaging of Transition Process of Flame Patterns around Micro PET Particles Flying Through Oscillating Combustion Gas Flow Reviewed
Y. SAIKI, N. OHIWA, Y. ISHINO, T. NAKAMA
The 7th Pacific Symposium on Flow Visualization and Image Processing, Kaohsiung, Taiwan 2009.11
Language：English Publishing type：Research paper (international conference proceedings)
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High-speed Expanded and Stereoscopic Imaging of Internal Multiphase Structure in a Micro PET Particle under Abrupt Heating Reviewed
T. Fukazawa, Y. Saiki, Y. Ishino, N. Ohiwa
Proceedings of International Workshop on Environment & Engineering 1 - 8 2009.11
Language：English Publishing type：Research paper (international conference proceedings)
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Enhancement behavior of Combustion and Heat Transfer in Four Types of Constant-Volume Combustors Reviewed
N. OHIWA, Y. ISHINO, J. ODA, K. MIYATA, Y. KOIKE
7th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics: ExHFT-7. Krakow, Poland CD-ROM ( MT-8 ) 2023 - 2030 2009.06
Language：English Publishing type：Research paper (scientific journal)
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High-Speed Microscopic Observation and Modeling of the Multi-Phase Process in a Micro Spherical PET Particle under Abrupt Heating Reviewed
N. OHIWA, Y. ISHINO, T. FUKURODA
Sixth Mediterranean Combustion Symposium, Porticcio-Ajaccio, Corsica-France 1 - 12 2009.06
Language：English Publishing type：Research paper (international conference proceedings)
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副室式燃焼器による準定容乱流予混合燃焼の促進（放射状多孔ノズルによる燃焼促進とピストン動特性の熱力学的考察） Reviewed
大岩 紀生，小田 次郎，宮田 賢一，小池 洋一郎，石野 洋二郎
日本機械学会論文集(B編) 75 ( 753 ) 1174 - 1181 2009.05
Language：Japanese Publishing type：Research paper (scientific journal)
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工業用代替燃料としての廃棄プラスチック樹脂粉末の急速加熱時の多相過程の高速度拡大観察 Reviewed
大岩 紀生，石野 洋二郎，加藤 篤徳
日本機械学会論文集(B編) 75 ( 752 ) 824 - 830 2009.04
Language：Japanese Publishing type：Research paper (scientific journal)
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Measurement of Instantaneous 3D-Distribution of Local Burning Velocity on a Turbulent Premixed Flame by Non-Scanning 3D-CT Reconstruction Reviewed
Y. ISHINO, K. TAKEUCHI, S. SIGA, N. OHIWA
Fourth European Combustion Meeting 2009, Vienna, Austria CD-ROM ( 178 ) 1 - 6 2009.04
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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Important Roles of Multiphase Process in Enhancement Mechanism of Micro Plastic Particle Combustion Reviewed
N. OHIWA, Y. ISHINO, A. YAMAMOTO
Proceedings of the Combustion Institute 32 ( 2 ) 1997 - 2004 2009.01
Language：English Publishing type：Research paper (scientific journal)
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Effects of Ambient Combustion Gas Flow on Flame Patterns in Micro PET Particle Combustion Reviewed
T. NAKAMA, T. TOMATSU, Y. ISHINO, N. OHIWA
The 7th JSME-KSME Thermal and Fluid Engineering Conference: TFEC-7. Sapporo, Japan 1 - 4 2008.10
Language：English Publishing type：Research paper (international conference proceedings)
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High-Speed Microscopic observation of the Multiphase Process of a Micro Spherical PET-Particle under Abrupt Heating Reviewed
T. FUKURODA, A. YAMAMOTO, Y. ISHINO, N. OHIWA
The 7th JSME-KSME Thermal and Fluid Engineering Conference: TFEC-7. Sapporo, Japan 1 - 4 2008.10
Language：English Publishing type：Research paper (international conference proceedings)
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Important Roles of Multiphase Process in Enhancement Mechanism of Micro Plastic Particle Combustion Reviewed
N. OHIWA, Y. ISHINO, A. YAMAMOTO
32nd International Symposium on Combustion: ISC-32, Montreal, Canada PROCI-D-07 ( 00019R2 ) 1 - 7 2008.08
Language：English Publishing type：Research paper (international conference proceedings)
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Measurement of Instantaneous 3D-Distribution of Local Burning Velocity on a Turbulent Flame by Non- Scanning 3D-CT Reconstruction with Flame- Tracking 40-Lens Camera Reviewed
Y. ISHINO, K. TAKEUCHI, S. SIGA, N. OHIWA
WIPP of 32nd International Symposium on Combustion, Montreal, Canada（概要審査） 1 2008.08
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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Non-Scanning 3D-CT Measurement with 40-Lens Tracking Camera for Turbulent Propane/Air Rich-Premixed Flame Reviewed
Y. ISHINO, K. TAKEUCHI, S. SIGA, N. OHIWA
6th International Energy Conversion Engineering Conference: IECEC-6, Cleveland, Ohio, USA AIAA ( 2008 ) 5664 2008.07
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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An Investigation on Thermal Recycling of Recycled Plastic Resin (Some Experimental Approches for Reducing Unbernt Particle Emission in the Recycled PET-Resin Powder Combustion) Reviewed
N. OHIWA, Y. ISHINO, R. YAMAKITA, M. KATO
Journal of Environment and Engineering: JEE 3 ( 1 ) 123 - 134 2008.05
Language：English Publishing type：Research paper (scientific journal)
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An Investigation on Thermal Recycling of Recycled Plastic Resin (Numerical Prediction of Unburnt Rate in PET-Resin Powder Combustion) Reviewed
N. OHIWA, Y. ISHINO, R. YAMAKITA
Journal of Environment and Engineering: JEE 3 ( 1 ) 158 - 169 2008.05
Language：English Publishing type：Research paper (scientific journal)
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Enhancement Mechanism of Micro Plastic Particle Combustion due to Multiple Internal Micro Bubbling and Explosions Reviewed
N. OHIWA, Y. ISHINO, R. YAMAKITA
5th European Therma-Sciences Conference: EUROTHERM 2008, Eindhoven, Netherlands CD-ROM ( COM-2 ) 1 - 8 2008.05
Language：English Publishing type：Research paper (scientific journal)
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Some Ingenious Techniques for Imaging Multiphase Processes of Micro Plastic Resin Particles under Abrupt Heating Reviewed
N. OHIWA, Y. ISHINO, R. YAMAKITA
日本燃焼学会誌 50 ( 151 ) 51 - 63 2008.02
Language：English Publishing type：Research paper (scientific journal)
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Microscopic Approaches to Decomposition and Burning Processes of a Micro Plastic Resin Particle under Abrupt Heating Reviewed
N. OHIWA, Y. ISHINO, A. YAMAMOTO, R. YAMAKITA
Journal of Thermal Science and Technology: Special Issue on HT2007, JTST 3 ( 1 ) 11 - 22 2008.02
Language：English Publishing type：Research paper (scientific journal)
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Magnifying and Tracking Observation of Micro PET Particles Passing through a Plane Premixed Flame Front Reviewed
N. OHIWA, Y. ISHINO, T. TOMATSU, R. YAMAKITA
Journal of Thermal Science and Technology: JTST 2 ( 2 ) 212 - 223 2007.11
Language：English Publishing type：Research paper (scientific journal)
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Microscopic Approaches to Decomposition and Burning Processes of a Micro Plastic Resin Particle Reviewed
A. YAMAMOTO, R. YAMAKITA, Y. ISHINO, N. OHIWA
2007 ASME-JSME Thermal Engineering and Summer Heat Transfer Conference: JTEC-2007, Vancouver, Canada 707 - 714 2007.07
Language：English Publishing type：Research paper (international conference proceedings)
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Non-Scanning 3D-CT Visualizations of Premixed Flames with a 40-Lens Camera Reviewed
Y. ISHINO, T. HIRANO, M. HIRANO, N. OHIWA
The 6th Pacific Symposium on Flow Visualization and Image Processing: PSFVIP-6, Hawaii A02 ( 2 ) 44 - 49 2007.05
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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High-Speed and Magnifying Observations of Ignition and Burning Processes of Micro PET Particles Frying Through a Two-Dimensional Premixed Flame Front Reviewed
Y. ISHINO, R. YAMAKITA, N. OHIWA
The 6th Pacific Symposium on Flow Visualization and Image Processing: PSFVIP-6, Hawaii A02 ( 1 ) 38 - 43 2007.05
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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An Investigation on Thermal Recycling of Recycled Plastic Resin (Effects of Replacement Rate and Median Diameter of PET-Resin Powder on In-Furnace Combustion) Reviewed
R. YAMAKITA, Y. ISHINO, M. KATO, N. OHIWA
Journal of Environment and Engineering: JEE 2 ( 1 ) 160 - 171 2007.02
Language：English Publishing type：Research paper (scientific journal)
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An Investigation on Thermal Recycling of Recycled Plastic Resin (Combustion Characteristics of PET-Resin Powder in a Ceramic Kiln Burner) Reviewed
Y. ISHINO, R. YAMAKITA, N. OHIWA
Journal of Environment and Engineering: JEE 2 ( 1 ) 136 - 147 2007.02
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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An Investigation on Thermal Recycling of Recycled Plastic Resin (Spherically Symmetric Analysis of Abrupt Heating Processes of a Micro Plastic-Resin Particle) Reviewed
N. OHIWA, Y. ISHINO, R. YAMAKITA
Journal of Environment and Engineering: JEE 2 ( 1 ) 148 - 159 2007.02
Language：English Publishing type：Research paper (scientific journal)
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Appearances of Internal Micro Boiling, Multiple Micro Explosions, Multiple Micro Jets and Micro Diffusion Flames around an Abruptly Heated Micro Plastic-Resin Particle Reviewed
Y. ISHINO, R.YAMAKITA, N. OHIWA
Proceedings of the Combustion Institute,31-2, The Combustion Institute. 31 ( 2 ) 2097 - 2105 2007.01
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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廃棄プラスチック樹脂のサーマル・リサイクルに関する研究（廃棄PET樹脂粉末燃焼における未燃率の数値予測） Reviewed
山北 龍児, 石野 洋二郎, 大岩 紀生
日本機械学会論文集(B編) 72 ( 724 ) 3128 - 3136 2006.12
Language：Japanese Publishing type：Research paper (scientific journal)
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Optical Analysis and Qualitative Discrimination of Vortex-Flame Interaction in a Plane Premixed Shear Layer Reviewed
N. OHIWA, Y. ISHINO
Journal of Flow, Turbulence and Combustion 77 ( 1-4 ) 359 - 380 2006.12
Language：English Publishing type：Research paper (scientific journal)
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Optical Analyses of Burning Processes of Recycled Plastic-Resin Powder Reviewed
R. YAMAKITA, Y. ISHINO, N. OHIWA
International Journal of Transport Phenomena: IJTP 8 223 - 237 2006.12
Language：English Publishing type：Research paper (scientific journal)
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Observation of Cytoskeleton and Cell Nucleus with 3D Fluorescent Optical Tomography Reviewed
T. MATSUMOTO, M. OGAWA, F. WAKE, K. NAGAYAMA, Y. ISHINO
The Biomedical Engineering Society Annual Meeting, BMES2006, Chicago, USA 2006.10
Language：English Publishing type：Research paper (international conference proceedings)
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廃棄プラスチック樹脂のサーマル・リサイクルに関する研究（PET粉末燃焼における未燃粒子の低減に関する実験的アプローチ） Reviewed
山北 龍児, 加藤 雄貴, 石野 洋二郎, 大岩 紀生
日本機械学会論文集(B編) 72 ( 722 ) 2454 - 2546 2006.10
Language：Japanese Publishing type：Research paper (scientific journal)
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Non-scanning 3D-CT measurement of Premixed Flames Reviewed
Y. ISHINO, O. INAGAWA, N. OHIWA
Turbulence, Heat and Mass Transfer, Ed: K. Hanjalić, Y. Nagano and S. Jakirlic, Brgell House Inc.. 5 617 - 620 2006.09
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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廃棄プラスチック樹脂のサーマル・リサイクルに関する研究（環状バーナ下流の高温酸化性領域におけるPET粉末燃焼特性） Reviewed
石野 洋二郎, 山北 龍児, 寺本 啓祐, 大岩 紀生
日本機械学会論文集(B編) 72 ( 721 ) 2300 - 2306 2006.09
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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Non-scanning 3D-CT Measurement of Premixed Flames Reviewed
Y. ISHINO, O. INAGAWA, N. OHIWA
5th International Symposium on Turbulence, Heat and Mass Transfer: THMS’06, Dobrovnik, Croatia 617 - 620 2006.09
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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Appearances of Internal Multiple Bubbling, Multiple Micro Explosions, Multiple Micro Jets and Micro Diffusion Flames around an Abruptly Heated Plastic-Resin Particle Reviewed
Y. ISHINO, R. YAMAKITA, N. OHIWA
The 31st International Symposium on Combustion: ISC-31, Heidelberg, Germany 31 2097 - 2105 2006.08
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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An investigation on thermal-recycling of recycled plastic resin (Spherically symmetric analysis of abrupt heating processes of a micro plastic-resin particle) Reviewed
R. YAMAKITA, Y. ISHINO, N. OHIWA
Heat Transfer – Asian Research: HTAR, Wiley Publishers. 35 ( 4 ) 279 - 293 2006.06
Language：English Publishing type：Research paper (scientific journal)
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廃棄プラスチック樹脂のサーマル・リサイクルに関する研究（急速加熱された単一プラスチック微粒子の挙動の画像解析） Reviewed
山北 龍児, 石野 洋二郎, 大岩 紀生
日本機械学会論文集(B編) 72 ( 716 ) 1060 - 1066 2006.04
Language：Japanese Publishing type：Research paper (scientific journal)
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An Attempt at Numerical Prediction of Unburnt Rate in Recycled Plastic-Resin Powder Combustion Reviewed
R. YAMAKITA, Y. ISHINO, N. OHIWA
The Second International Symposium on Micro & Nano Technology: ISMNT-2, Hsinchu, Taiwan 173 - 176 2006.03
Language：English Publishing type：Research paper (international conference proceedings)
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廃棄プラスチック樹脂のサーマル・リサイクルに関する研究（バーナ内部の燃焼ガスとPET粉末の流動および飛翔PET粒子の形状と直径変化の画像解析） Reviewed
山北 龍児, 佐藤 毅, 石野 洋二郎, 大岩 紀生
日本機械学会論文集(B編) 72 ( 713 ) 178 - 193 2006.01
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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廃棄プラスチック樹脂のサーマル・リサイクルに関する研究（PET樹脂粉末の助燃率およびメディアン直径が炉内燃焼特性に及ぼす影響） Reviewed
山北 龍児, 石野 洋二郎, 加藤 正樹, 大岩 紀生
日本機械学会論文集(B編) 71 ( 711 ) 2792 - 2799 2005.11
Language：Japanese Publishing type：Research paper (scientific journal)
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Optical Analyses of Burning Processes of Recycled Plastic Resin Powder Reviewed
R. YAMAKITA, Y. ISHINO, N. OHIWA
The Sixteenth International Symposium on Transport Phenomena: ISTP-16, Prague, Czech Republic CRF ( 1-2 ) 1 - 7 2005.08
Language：English Publishing type：Research paper (international conference proceedings)
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廃棄プラスチック樹脂のサーマル・リサイクルに関する研究（プラスチック樹脂微粒子の急速加熱過程の球対称一次元解析） Reviewed
山北 龍児, 石野 洋二郎, 大岩 紀生
日本機械学会論文集(B編) 71 ( 708 ) 2154 - 2161 2005.08
Language：Japanese Publishing type：Research paper (scientific journal)
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Appearances of Multiple Micro Explosions, Micro Jets and Micro Diffusion Flames Around an Abruptly Heated Micro PET-Resin Particle Reviewed
R. YAMAKITA, Y. ISHINO, N. OHIWA
Proceedings of the 5th Asia-Pacific Conference on Combustion, Adelaide, Australia 209 - 212 2005.07
Language：English Publishing type：Research paper (international conference proceedings)
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Instantaneous Volume Imaging of Fuel Consumption Rate Distribution of a Turbulent Propane-Air Rich Premixed Flame by Three-dimensional Scanless Computerized Tomographic Reconstruction Method with a Multi(40)- Lens- Camera (Multi- Lens- Camera 3D-CT) Reviewed
Y. ISHINO, O. INAGAWA, T. NAKAMURA, N. OHIWA
Proceedings of the 5th Asia-Pacific Conference on Combustion, Adelaide, Australia 393 - 396 2005.07
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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An Experimental Approach to Vortex-Flame Interaction in Karman Vortex Streets behind a Rod-Array Reviewed
N. OHIWA, Y. ISHINO
Fourth International Symposium on Turbulence and Shear Flow Phenomina: TSFP-4, Williamsburg, Virginia, USA 793 - 798 2005.06
Language：English Publishing type：Research paper (international conference proceedings)
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40眼カメラとCT法による瞬間三次元分布計測手法（乱流予混合火炎の輝度分布の計測） Reviewed
石野 洋二郎, 稲川 治, 大岩 紀生
可視化情報学会論文集 25 ( 6 ) 21 - 26 2005.06
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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Instantaneous Volume Imaging of Fuel Consumption Rate Distribution in Turbulent Rich and Lean Premixed Flames by Three- Dimensional Scanless Computerized Tomographic (3D-CT) Reconstruction Method with a 40-Lens-Camera Reviewed
Y. ISHINO, O. INAGAWA, N. OHIWA
Fourth International Symposium on Turbulence and Shear Flow Phenomina: TSFP-4, Williamsburg, Virginia, USA 2 769 - 774 2005.06
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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Optical Observation and Discrete Vortex Analysis of Vortex-Flame Interaction in a Plane premixed Shear Flow Reviewed
N. OHIWA, Y. ISHINO
6th International Symposium on Engineering Turbulence Modelling and Measurements: ETMM6, Sardinia, Italy 915 - 925 2005.05
Language：English Publishing type：Research paper (international conference proceedings)
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Optical Observation and Discrete Vortex Analysis of Vortex-Flame Interaction in a Plane Premixed Shear Flow Reviewed
N. OHIWA, Y. ISHINO
Engineering Turbulence Modelling and Experiments 6, (Ed. W.Rodi and M.Mulas). Elsevier. 915 - 925 2005.05
Language：English Publishing type：Research paper (scientific journal)
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Spherically Symmetric Analysis of Abrupt Heating Processes of a Micro Plastic Resin Particle Reviewed
R. YAMAKITA, Y. ISHINO, N. OHIWA
The Sixth KSME-JSME Thermal and Fluid Engineering Conference: TFEC-6, Jeju, Korea 078 2005.03
Language：English Publishing type：Research paper (international conference proceedings)
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An Investigation on Thermal Recycling of Recycled Plastic Resin (Combsution Characteristics of Polyethylene Terephthalate Resin Powder in a High Temperature Oxidizing Atmosphere) Reviewed
R.YAMAKITA, K. MIURA, Y. ISHINO, N. OHIWA
JSME International Journal, Series B, "Special Issue on Experimental Mechanics in Heat and Fluid Flow" 48 ( 1 ) 83 - 91 2005.02
Language：English Publishing type：Research paper (scientific journal)
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Three-Dimensional Computerized Tomographic Reconstruction of Instantaneous Distribution of Chemiluminescence of a Turbulent Premixed Flame Reviewed
Y. ISHINO, N. OHIWA
JSME International Journal, Series B, "Special Issue on Experimental Mechanics in Heat and Fluid Flow" 48 ( 1 ) 34 - 40 2005.02
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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An Experimental Study on Vortex-Flame Interaction of a Spark-Ignited Flame with Coherent Structure in a Plane Premixed Shear Flow Reviewed
Y. ISHINO, S. YAMAGUCHI, N. OHIWA
ENERGY 30 323 - 336 2005.01
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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廃棄プラスチック樹脂のサーマル・リサイクルに関する研究（PET樹脂粉末の窯業用助燃料としての燃焼特性） Reviewed
山北 龍児, 石野 洋二郎, 大岩 紀生
日本機械学会論文集(B編) 71 ( 701 ) 357 - 364 2005.01
Language：Japanese Publishing type：Research paper (scientific journal)
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Burning Processes of Polyethylene Terephthalate Resin Powder in a High Temperature Oxidizing Atmosphere Reviewed
R. YAMAKITA, K. MIURA, Y. ISHINO, N. OHIWA
3rd International Symposium on Two-Phase Flow Modelling and Experimentation: ISTPFME-3, Pisa, Italy 1531 - 1538 2004.09
Language：English Publishing type：Research paper (international conference proceedings)
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Three-Dimensional Computerized Tomographic Reconstruction of Instantaneous Distribution of Emission Intensity in Turbulent Premixed Flames Reviewed
Y. ISHINO
ECI Conference on Lean Combustion Technology II: Promise and Practice", Tomar, Portugal（概要審査） 2004.04
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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High-Speed Direct Microscopic Observations of Ignition and Burning Processes of a Micro Plastic Resin Particle under Stationary and Abrupt Heating Reviewed
R. YAMAKITA, Y. ISHINO, N. OHIWA
First International Symposium on Micro and Nano Technology: ISMNT-1, Honolulu, Hawaii XXXIV ( C-04 ) 1 - 6 2004.03
Language：English Publishing type：Research paper (international conference proceedings)
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Acoustic Resonance Characteristics of a Two- Dimensional Pulse Combustor Reviewed
N. OHIWA, Y. ISHINO, S. YAMAGUCHI
Proceedings of The Third Mediterranean Combustion Symposium, Marrakech, Morrocco 1 282 - 294 2003.06
Language：English Publishing type：Research paper (international conference proceedings)
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Combustion Characteristics of a Twin Fuel Ceramic Burner Using Recycled PET-Resin Powder as an Auxiliary Fuel Reviewed
Y. ISHINO, R. YAMAKITA, S. KURODA, M. KATO, M. YASUDA, N. OHIWA
The 6th ASME-JSME Thermal Engineering Joint Conference: AJTEC-2003, Hawaii, USA TED-AJ03 ( 181 ) 1 - 6 2003.03
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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Simultaneous and Two- dimensional High Speed Schlieren Observation of Effects of Ignition Points on Vortex-Flame Interaction Reviewed
N. OHIWA, Y. ISHINO, M. IKARI, S. YAMAGUCHI
Proceedings of The 25th International Congress on High Speed Photography and Photonics, Beaune, France, SPIE 4948 176 - 181 2002.09
Language：English Publishing type：Research paper (international conference proceedings)
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シュバルツ・クリストッフェル写像変換を用いた離散渦法による二次元拡大・縮小流路内のせん断流の数値解析 Reviewed
石野 洋二郎, 山口 譽起, 大岩 紀生
日本機械学会論文集(B編) 68 ( 667 ) 935 - 942 2002.03
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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Optical Analysis of Vortex- Flame Interaction of a Spark-Ignited Flame with Coherent Structure in a Plane Premixed Shear Flow Reviewed
Y. ISHINO, S. YAMAGUCHI, N. OHIWA
Proceedings of The Second International Mediterranean Combustion Symposium MCS-02, Sharm El-Sheik, Egypt 1 404 - 410 2002.01
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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平面予混合せん断流中の組織構造における火花点火火炎の伝播挙動（二方向同時撮影による火花点火火炎の光学的観察） Reviewed
石野 洋二郎, 杉浦 啓介, 大岩 紀生
日本機械学会論文集(B編) 68 ( 665 ) 231 - 237 2002.01
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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Vortex-Flame Interaction of a Spark-Ignited Flame with Coherent Structure in a Plane Premixed Shear Flow Reviewed
Y. ISHINO, S. YAMAGUCHI, N. OHIWA
Proceedings of of The 3rd International Symposium on Advanced Energy Conversion Systems and Related Technologies (RAN2001), Nagoya, Japan 1 - 7 2001.12
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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平面予混合せん断流中の組織構造における火花点火火炎の伝播挙動（音響励起による組織構造の特性制御） Reviewed
石野 洋二郎, 佐野 健, 杉浦 啓介, 大岩 紀生
日本機械学会論文集(B編) 67 ( 664 ) 3183 - 3188 2001.12
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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作動時のパルス燃焼器の音響特性解析 Reviewed
石野 洋二郎, 山口 譽起, 大岩 紀生
日本機械学会論文集(B編) 67 ( 662 ) 2582 - 2589 2001.10
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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Effects of Pulsation on External Flow Heat Transfer around a Rod Reviewed
Y. ISHINO, T. ABE, S. YAMAGUCHI, N. OHIWA
Proceedings of The 5th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics 3 2027 - 2032 2001.09
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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シャボン玉法を応用したパルス燃焼器の音響特性の実験的・数値的アプローチ Reviewed
石野 洋二郎, 竹村 泰昌, 新美 博隆, 大岩 紀生
日本機械学会論文集(B編) 67 ( 659 ) 1823 - 1828 2001.07
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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An Experimental Approach to Vortex-Flame Interaction Using Coherent Structure in a Premixed Plane Shear Layer Reviewed
Y. ISHINO, S. YAMAGUCHI, N. OHIWA
Proceedings of The Second International Symposium on Turbulence and Shear Flow Phenomina 3 327 - 332 2001.06
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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Optical Analysis of Pulse Combustion Using Shadow- graph and Planar CH-LIF Imaging Technique Reviewed
Y. ISHINO, T. HASEGAWA, S. YAMAGUCHI, N. OHIWA
Transactions of the ASME, Journal of Energy Resources Technology 1 ( 123 ) 59 - 63 2001.03
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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非定常火炎噴流による定容燃焼器内予混合気の点火・燃焼過程（点火限界近くのノズル径による火炎噴流の可視化観察および温度特性の解析的評価） Reviewed
石野 洋二郎, 瀬尾 洋充, 山口 譽起, 大岩 紀生
日本機械学会論文集(B編) 66 ( 642 ) 571 - 578 2000.12
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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Optical Observation of Vortex-Flame Interaction Using Spark-Ignited Premixed Flames in a Quasi-Turbulent and Quiescent Wake Reviewed
Y. ISHINO, Y. HATTORI, N. OHIWA
JSME International Journal, Series B, "Innovative Thermal and Fluid Technology on Energy and Environment" 43 ( 4 ) 563 - 569 2000.11
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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Optical Observation of Vortex- Flame Interaction Using Spark- Ignited Premixed Flames in a Quasi-Turbulent and Quiescent Wake Reviewed
Y. ISHINO, Y. HATTORI, N. OHIWA
Proceedings of The 4th JSME-KSME Thermal Engineering Conference, Kobe, Japan 2 1 - 6 2000.10
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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Combined Planar Imaging of Schlieren Photography with OH-LIPF and Spontaneous OH-emission in a 2-D Valve- less Pulse Combustor Reviewed
Y. ISHINO, T. HASEGAWA, S. YAMAGUCHI, N. OHIWA
Proceedings of the 5th ASME / JSME Joint Thermal Engineering Conference, San Diego, USA, AJTE99-6485 AJTE99 ( 6485 ) 1 - 7 1999.03
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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Planar Imaging of CH-LIF in a Two-dimensional Valveless Pulse Combustor Reviewed
Y. ISHINO, T. HASEGAWA, S. YAMAGUCHI, N. OHIWA
Proceedings of The 2nd International Symposium on Advanced Energy Conversion Systems and Related Technologies (RAN'98), Nagoya, Japan 184 - 185 1998.12
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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Acoustic Excitation of Dual Diffusion Flames with Coherent Structure behind a Rear- Facing Semicircular Cylinder Reviewed
Y. ISHINO, N. OHIWA, T. ABE, S. YAMAGUCHI
Combustion Science and Technology 130 97 - 113 1997.12
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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二次元バルブレスパルス燃焼器の音響特性の実験的および数値的評価（数値解析手法と非燃焼時の音響特性の評価の試み） Reviewed
石野 洋二郎, 可児 宣人, 大岩 紀生, 山口 譽起
日本機械学会論文集(B編) 63 ( 614 ) 3419 - 3425 1997.10
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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Flow and Heat Transfer Characteristics in Pulsating Pipe Flows (Effects of Pulsation on Internal Heat Transfer in a Circular Pipe Flow) Reviewed
Y. ISHINO, M. SUZUKI, T. ABE, N. OHIWA, S. YAMAGUCHI
Heat Transfer Japanese Research 25 ( 5 ) 323 - 341 1997.09
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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二次元バルブレスパルス燃焼器内の燃焼過程の光学的観察 Reviewed
石野 洋二郎, 可児 宣人, 大岩 紀生, 山口 譽起
日本機械学会論文集(B編) 63 ( 613 ) 3137 - 3143 1997.09
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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Interaction of a Strong Vortex Ring with a Premixed Flame Reviewed
T. HASEGAWA, K. HONGO, Y. ISHINO, N. OHIWA
Proceedings of The First Asia-Pacific Conference on Combustion (ASPACC97) 150 - 153 1997.05
Language：English Publishing type：Research paper (international conference proceedings)
-
Acoustic Excitation of Dual Diffusion Flames with Coherent Structure behind a Rear- Facing Semicircular Cylinder Reviewed
Y. ISHINO, N. OHIWA, T. ABE, S. YAMAGUCHI
Proceedings of The Spring Meeting of Western State Section / The Combustion Institute, Livermore, CA, USA（概要審査） 97S ( 019 ) 1 - 9 1997.04
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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管内脈動流の流動および伝熱特性（内部流の伝熱に及ぼす脈動流の効果） Reviewed
石野 洋二郎, 鈴木 学, 阿部 友昭, 大岩 紀生, 山口 譽起
日本機械学会論文集(B編) 62 ( 597 ) 1928 - 1936 1996.05
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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Acoustic Excitation of Diffusion Flames with Coherent Structure in a Plane Shear Layer (Application of Active Combustion Control to Two- Dimensional Phase-Locked Averaging Measurement) Reviewed
Y. ISHINO, T. KOJIMA, N. OIWA, S. YAMAGUCHI
JSME International Journal, Ser. B 39 ( 1 ) 156 - 163 1996.02
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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Interactions between Non- symmetrical Wake Structure and Turbulent Diffusion Flames behind a Rear-Facing Semicircular Cylinder Reviewed
N. OHIWA, Y. ISHINO, S. YAMAGUCHI
Combustion and Flame 99 302 - 310 1994.12
Language：English Publishing type：Research paper (scientific journal)
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強制点火形加圧バルブレスパルス燃焼器内の着火・燃焼過程の光学的観察及び燃焼特性 Reviewed
石野 洋二郎, 小木曽 誠人, 戸田 忠司, 大岩 紀生, 山口 譽起
自動車技術会論文集 25 ( 3 ) 81 - 86 1994.07
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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半円柱後流の非対称渦列に形成される拡散火炎の構造と挙動 Reviewed
大岩 紀生, 石野 洋二郎, 山口 譽起
日本機械学会論文集(B編) 59 ( 568 ) 3981 - 3987 1993.12
Language：Japanese Publishing type：Research paper (scientific journal)
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組織構造を伴う平面せん断拡散火炎の音響励起（二次元位相平均分布測定へのアクティブ燃焼制御の応用） Reviewed
石野 洋二郎, 小島 利昭, 大岩 紀生, 山口 譽起
日本機械学会論文集(B編) 59 ( 567 ) 3645 - 3650 1993.11
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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組織構造を伴う平面せん断拡散火炎の音響励起（音響励起による燃焼特性の変化） Reviewed
石野 洋二郎, 小島 利昭, 大岩 紀生, 山口 譽起
日本機械学会論文集(B編) 59 ( 566 ) 3256 - 3262 1993.10
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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Phase Characteristics of Coherent Structure in Acoustic Excited Plane Diffusion Flames Reviewed
Y. ISHINO, T. KOJIMA, N. OIWA, S. YAMAGUCHI
Ninth Symposium (International) on Turbulent Shear Flows 31 ( 1 ) 1 - 6 1993.08
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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写像平面で渦の移動を行う写像離散渦法（平行制約壁を伴うせん断層の挙動の解析） Reviewed
石野 洋二郎, 山口 譽起, 大岩 紀生
日本機械学会論文集(B編) 58 ( 547 ) 653 - 660 1992.03
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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広がり流路内の火炎の安定性および保炎（平面せん断流中の拡散火炎の構造と挙動） Reviewed
石野 洋二郎, 山口 譽起, 大岩 紀生
日本機械学会論文集(B編) 57 ( 538 ) 2132 - 2138 1991.06
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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圧力こう配のある流れ場における火炎の安定性および保炎（円柱による保炎特性と後流渦構造の関係） Reviewed
石野 洋二郎, 山口 譽起, 大岩 紀生
日本機械学会論文集(B編) 56 ( 528 ) 2469 - 2475 1990.08
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)
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圧力こう配のある流れ場における火炎の安定性および保炎（等温空気流れの場合の円柱後流渦構造の挙動） Reviewed
山口 譽起, 石野 洋二郎, 大岩 紀生, 長谷川 達也
日本機械学会論文集(B編) 56 ( 523 ) 803 - 809 1990.03
Language：Japanese Publishing type：Research paper (scientific journal)
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