Papers - HASEGAWA Yutaka

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  • Simplified numerical modeling of rotational speed response for a small wind turbine Reviewed International journal

    Hiroki Suzuki, Yutaka Hasegawa, Shinsuke Mochizuki

    Proceedings of the International Conference on Power Engineering 2021 (ICOPE-2021)   0130 - 4   2021.10

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  • Aerodynamic characteristics of multiple cross-flow wind turbines stacked in rectangular duct Reviewed International journal

    Keitaro Kimura, Yutaka Hasegawa, Tatsuo Ushijima

    Proceedings of the 16th Asian International Conference on Fluid Machinery   AICFM162021-00094 - 12   2021.09

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    Language:English   Publishing type:Research paper (international conference proceedings)  

  • Autocorrelation Function for Estimating Static Pressure Fluctuation Intensity in Incompressible Homogeneous Turbulence under an Intermediate Reynolds Number Reviewed International journal

    Hiroki Suzuki, Shinsuke Mochizuki, Yutaka Hasegawa

    Journal of Physics: Conference Series   1978   012002 - 8   2021.07

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/issn.1742-6596

  • Second-order kinetic energy-conservative analysis of incompressible turbulence under a collocated grid system Reviewed International journal

    Hiroki Suzuki, Yutaka Hasegawa, Masaya Watanabe, Ushijima Tatsuo, Shinsuke Mochizuki

    Journal of Physics: Conference Series   1633 ( 012063 )   1 - 9   2020.09

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  • Verification of the numerical analysis using a collocated grid system directly solving the quasi-inviscid incompressible flow around a symmetric airfoil Reviewed International journal

    Hiroki Suzuki, Masaya Watanabe, Yutaka Hasegawa and Shinsuke Mochizuki

    Journal of Physics: Conference Series   1633 ( 012028 )   1 - 10   2020.09

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  • Simple scheme generating an axisymmetrically anisotropic initial flow of incompressible turbulence using a normal random number vector Reviewed International journal

    Hiroki Suzuki, Koudai Hasebe, Yutaka Hasegawa, Tatsuo Ushijima, Shinsuke Mochizuki

    Journal of Physics: Conference Series   1592 ( 012004 )   1 - 8   2020.09

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  • Reduced Conservation Error of Kinetic Energy using a Runge-Kutta Algorithm with Reduced Numerical Dissipation Reviewed International journal

    Hiroki Suzuki, Koudai Hasebe, Yutaka Hasegawa, Tatsuo Ushijima

    Journal of Physics: Conference Series   1633 ( 012021 )   1 - 9   2020.09

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  • Influence of order enhancement of the Runge-Kutta method on low-order turbulence statistics of incompressible wall turbulence under a second-order central difference scheme Reviewed International journal

    Shotaro Jomura, Hiroki Suzuki, Yutaka Hasegawa, Shinnosuke Matsuo, Shinsuke Mochizuki

    Journal of Physics: Conference Series   1592 ( 012095 )   1 - 9   2020.09

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  • Quasi-Analytical Solutions of a Turbulence-Modeling Equation on the Robustness of Decaying Homogeneous Turbulence Reviewed International journal

    Hiroki Suzuki, Shinsuke Mochizuki, Yutaka Hasegawa

    Advances in Mechanical Engineering   12 ( 2 )   1 - 13   2020.02

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  • Hybrid Wake Model for Aerodynamic Load Calculation of HAWT Rotor by Vortex Lattice Method

    T. Hida, Y. Hasegawa, T. Ushijima, J. Ozaki

    Proceedings of International Conference on Material and Systems for Sustainability 2019   2019.11

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:Nagoya University  

  • Study on Structural Load Reduction by Using Combined Control of Blade Pitch and Rotational Speed for HAWT

    K.Kawase, H.Okazaki, Y.Hasegawa and T.Ushijima

    Proceedings of International Conference on Material and Systems for Sustainability 2019   2019.11

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:Nagoya University  

  • Study on Diffusion and Evaporation of Micro Mist Introduced in Duct Air Flow

    Yuta Sato, Yutaka Hasegawa, Yoshihiro Kojima, Tatsuo Ushijima, Kazuki Nishiyama

    Proceedings of International Conference on Material and Systems for Sustainability 2019   2019.11

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  • Simple mean-error estimation of a recalibration scheme for constant-temperature anemometry measurements Reviewed International journal

    Hiroki Suzuki, Yoshiaki Shikata, Shinsuke Mochizuki, Yutaka Hasegawa

    Conf. Series: Journal of Physics   2019.10

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1088/1742-6596/1324/1/012062

  • Simple analytical solutions of one-equation modelling for steady/decaying homogeneous turbulence sensitized to small strain Reviewed International journal

    Hiroki Suzuki, Shinsuke Mochizuki, Yutaka Hasegawa

    Conf. Series: Journal of Physics   2019.10

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 1088/1742-6596/1324/1/012063

  • Numerical-based theoretical analysis on the decay of homogeneous turbulence affected by small strain based on constant and linear strain variations Reviewed International journal

    Hiroki Suzuki, Kenji Fujita, Shinsuke Mochizuki, Yutaka Hasegawa

    Journal of Physics   1053   012039   2018.07

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/1742-6596/1053/1/012039

  • Numerical-based theoretical analysis on effects of weak fluid acceleration of free-stream due to wind-tunnel blockage on grid-generated turbulence Reviewed International journal

    Hiroki Suzuki, Shinsuke Mochizuki, Yutaka Hasegawa

    Flow Measurement and Instrumentation   62   1 - 8   2018.03

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.flowmeasinst.2018.03.005

  • Experimental Determination of Batchelor Constant in Oscillating-Grid Turbulence Reviewed

    Tatsuo USHIJIMA, Takahiro NAKAMOTO, Yutaka HASEGAWA

    Extended Abstracts of The 9th JSME-KSME Thermal and Fluids Engineering Conference   TFEC9 ( 1409 )   2017.10

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  • Two-Point Measurement of Intermittency in Low Reynolds Number Poiseuille Flow Reviewed

    Tatsuo USHIJIMA, Kiyonori MIZUNO, Yutaka HASEGAWA

    Extended Abstracts of The 9th JSME-KSME Thermal and Fluids Engineering Conference   TFEC9 ( 1423 )   2017.10

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  • Turbulence Generated by Small Objects Suspended from Grid Reviewed

    Tatsuo USHIJIMA, Kousuke HIROBE, Yutaka HASEGAWA

    Extended Abstracts of The 9th JSME-KSME Thermal and Fluids Engineering Conference   TFEC9 ( 1425 )   2017.10

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  • Wake and drag of Sierpinski tetrahedral object as crown-tree model Reviewed International journal

    Tatsuo USHIJIMA, Yutaka HASEGAWA, Hiroki SUZUKI

    Proceedings of the 6th International Conference on Jets, Wakes, and Separated Flows   2017.10

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  • Research of electric power regeneration using automotive cooling fan(Investigation of causes for efficiency decrease of wind turbine mounted on actual vehicle)

    Satoshi Ashizawa, Yutaka Hasegawa, Shinichi Oda, Tatsuo Ushijima

    Proceedings of International Conference on Materials and Systems for Sustainability   ICMaSS2017   1205   2017.09

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:Institute of Materials and Systems for Sustainability, Nagoya University  

  • Study on Aerodynamic Transient Characteristics due to Blade Pitch Control of Horizontal Axis Wind Turbine

    Ribero Nakamura, Yutaka Hasegawa, Shinya Otsuka, Tatsuo Ushijima

    Proceedings of International Conference on Materials and Systems for Sustainability   ICMaSS2017   1204   2017.09

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:Institute of Materials and Systems for Sustainability, Nagoya University  

  • Numerical Study on Structural System Oscillation for Horizontal Axis Wind Turbine Rotors with Multi Body Dynamics

    Tatsuya Urano, Yutaka Hasegawa, Tatsuo Ushijima

    Proceedings of International Conference on Materials and Systems for Sustainability   ICMaSS2017   1206   2017.09

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:Institute of Materials and Systems for Sustainability, Nagoya University  

  • Study on compression work reduction of centrifugal compressor for Micro Gas Turbine system using evaporative cooling method

    Kazuki Nishiyama, Yutaka Hasegawa, Yoshihiro Kojima, Tatsuo Ushijima

    Proceedings of International Conference on Materials and Systems for Sustainability   ICMaSS2017   1207   2017.09

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:Institute of Materials and Systems for Sustainability, Nagoya University  

  • Unsteady wake analysis of horizontal axis wind turbine rotors with reduced calculation load Reviewed International journal

    Yutaka HASEGAWA, Kazuki KUBOTA, Shinichi ODA, Tatsuo USHIJIMA and Hiroki SUZUKI

    Proceedings of 15th World Wind Energy Conference and Exibition   PA ( A2 )   1 - 4   2016.11

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    Authorship:Lead author   Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:World Wind Energy Association (WWEA)  

  • Research of electric power regeneration using automotive cooling fan Reviewed International journal

    Shinichi ODA, Yutaka HASEGAWA, Tatsuo USHIJIMA, Hiroki SUZUKI

    Proceedings of 15th World Wind Energy Conference and Exibition   PS ( G1 )   1 - 3   2016.11

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:World Wind Energy Association (WWEA)  

  • Study on Pitch Motion Optimization of Wing-Stroke Wind Turbine Reviewed

    Hironori NAKANO, Yutaka HASEGAWA, Hiroki SUZUKI, Tatsuo USHIJIMA

    Proceedings of International Symposium on EcoTopia Science '15   1 - 2   2015.11

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:Nagoya University  

  • Research of Electric Power Regeneration using Automotive Cooling fan (Improvement of Fan Efficiency by Diffuser) Reviewed

    Yoshitaka WAGAYAMA, Shinnichi ODA, Yutaka HASEGAWA, Hiroki SUZUKI, Tatsuo USHIJIMA

    Proceedings of International Symposium on EcoTopia Science '15   1 - 2   2015.11

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:Nagoya University  

  • A Small Wind Tunnel with Lower Fluid Acceleration Reviewed

    Shinnosuke MATSO, Hiroki SUZUKI, Yutaka HASEGAWA, Tatsuo USHIJIMA, Shinsuke MOCHIZUKI

    Proceedings of 10th International Symposium on Advanced Science and Technology in Experimenatal Mechanics   2015.11

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  • Fundamental Study on the Temporal Variation of CTA Calibration Curves Reviewed

    Hiroki SUZUKI, Shinsuke MOCHIZUKI, Yutaka HASEGAWA

    Proceedings of 10th International Symposium on Advanced Science and Technology in Experimenatal Mechanics   2015.11

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  • Research of electric power regeneration using automotive cooling fan(Influence of wind turbine on air resistance through vehicle cooling system) Reviewed

    81 ( 830 )   1 - 12   2015.10

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1299/transjsme.14-00691

  • Research of electric power regeneration using automotive cooling fan(Enhancement of wind turbine power by installing high solidity rotor on vehicle) Reviewed

    Shinichi ODA, Yutaka HASEGAWA,Hiroki SUZUKI, Tatsuo USHIJIMA, Hideki OOYA

    81 ( 829 )   1 - 12   2015.09

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1299/transjsme.15-00042

  • Research of electric power regeneration using automotive cooling fan (Improvement of wind turbine efficiency by high solidity rotor) Reviewed

    Shinichi ODA, Yutaka HASEGAWA, Hiroki SUZUKI, Tatsuo USHIJIMA

    81 ( 827 )   1 - 12   2015.07

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1299/transjsme.15-00069

  • ON DEVIATION OF OPERATED TIP SPEED RATIO OF SMALL WIND TURBINE DUE TO EFFECT OF AIR DENSITY VARIATION Reviewed

    103 - 108   2015.03

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

  • Simplified equations for the rotational speed response to inflow velocity variation in fixed-pitch small wind turbines Reviewed

    Hiroki Suzuki, Yutaka Hasegawa

    Fluid Dynamics Research   47 ( 015510 )   2015.02

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    DOI: 10.1088/0169-5983/47/1/015510

  • 8線式熱線プローブによる速度勾配全成分の測定 Invited

    菱川詠二,矢野匠馬,牛島達夫,鈴木博貴,長谷川豊

    ながれ   33 ( 6 )   479 - 482   2014.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

  • Formulation and Validation of Conservation Errors on Lighthill’s Acoustics Tensor Reviewed

    Hiroki Suzuki, Yutaka Hasegawa, Tatsuo Ushijima

    Proceedings of the 6th International Conference on Vortex Flows and Vortex Models   CD-Rom   1 - 2   2014.11

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  • 自動車用送風機の電力回生に関する研究(翼型改良による風車性能の向上) Reviewed

    織田 信一,長谷川 豊,鈴木 博貴,牛島 達夫

    日本機械学会論文集   80 ( 819 )   FE0315   2014.11

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1299/transjsme.2014fe0315

  • A 3D Navier-Stokes Simulation under Staggered/Collocated Grids with High-Kinetic-Energy-Conservation Reviewed

    Hiroki Suzuki, Shinnosuke Matsuo, Masaya Watanabe, Yutaka Hasegawa, Tatsuo Ushijima

    Proceedings of the Grand Renewable Energy 2014 International Conference and Exhibition   P-Wd ( 2-22 )   1 - 3   2014.07

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  • Effects of Blade Aspect Ratio on Aerodynamic Performance of Turbine Blade in Wing-Stroke Motion Reviewed

    Hironori Nakano, Noriyuki Tanimura, Yutaka Hasegawa, Hiroki Suzuki, Tatsuo Ushijima

    Proceedings of the Grand Renewable Energy 2014 International Conference and Exhibition   P-Wd ( 1-33 )   1 - 4   2014.07

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  • Study of Tower Effects on Rotor Characteristics of Horizontal Axis Wind Turbine Reviewed

    Noriyuki Tanimura, Yutaka Hasegawa, Hiroki Suzuki, Fumiya Hara, Tatsuo Ushijima

    Proceedings of the Grand Renewable Energy 2014 International Conference and Exhibition   P-Wd ( 1-22 )   1 - 4   2014.07

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  • Improvement of Rotor Configuration for Achievement of Automotive Fan-Turbine System Reviewed

    Shinichi Oda, Yutaka Hasegawa, Hiroki Suzuki, and Tatsuo Ushijima

    Proceedings of the Grand Renewable Energy 2014 International Conference and Exhibition   O-Wd ( 15-2 )   1 - 4   2014.07

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  • Development and Application of an Navier-Stokes Simulation Code with High-Kinetic-Energy-Conservation Reviewed

    Hiroki Suzuki, Shinnosuke Matsuo, Yutaka Hasegawa, Tatsuo Ushijima

    Proceedings of the Grand Renewable Energy 2014 International Conference and Exhibition   O-Wd ( 1-2 )   1 - 3   2014.07

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  • PLIF法計測による統計分布に及ぼす時間変化/変動ノイズの影響予測(量子収率の時間変化・励起光強度・カメラゲイン変動の影響予測式と実験的検証) Reviewed

    鈴木 博貴,長田 孝二,酒井 康彦,長谷川 豊,牛島 達夫

    日本機械学会論文集   80 ( 813 )   FE0114   2014.05

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    DOI: 10.1299/transjsme.2014fe0114

  • Research of Electric Power Regeneration using Automotive Cooling Fan Reviewed

    S. Oda, Y. Hasegawa, H. Suzuki, T. Ushijima

    Proceedings of International Symposium on EcoTopia Science 2013   2013.12

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  • Study on Blade Elasticity Influence on Blade Load Characteristics of NREL Turbine Reviewed

    F. Hara, Y. Hasegawa, N. Tanimura, H. Suzuki, T. Ushijima

    Proceedings of International Symposium on EcoTopia Science 2013   2013.12

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  • Numerical Study of Dynamic Inflow Effects on Aerodynamic Response of HAWT Rotor Reviewed

    Y. Taniguchi, Y. Hasegawa, N. Tanimura, H. Suzuki, T. Ushijima

    Proceedings of International Symposium on EcoTopia Science 2013   2013.12

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  • Direct Numerical Simulation of Fractal-Generated Turbulence Reviewed

    H. Suzuki, K. Nagata, Y. Sakai, T. Hayase, Y. Hasegawa, T. Ushijima

    Fluid Dynamics Research   45 ( 6 )   2013.11

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  • An Attempt to Improve Accuracy of Higher-Order Statistics and Spectra in Direct Numerical Simulation of Incompressible Wall Turbulence by using the Compact Schemes for Viscous Terms Reviewed

    H. Suzuki, K. Nagata, Y. Sakai, T. Hayase, Y. Hasegawa, T. Ushijima

    International Journal for Numerical Methods in Fluids   73 ( 6 )   509 - 522   2013.10

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  • DNS Study on Pressure Characteristics of Fractal-Generated Turbulence Reviewed

    H. Suzuki, K. Nagata, Y. Sakai, T. Hayase, Y. Hasegawa, T. Ushijima

    Proceedings of 4th International Conference on Jets, Wakes and Separated Flows   ( ICJWSF2013-1109 )   1 - 4   2013.09

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  • Measurement of Axial Turbulent Scalar Flux of High Sc/low Re Round Jet using Line Scan Camera Reviewed

    H. Nishiyama, T. Ushijima, H. Suzuki, Y. Hasegawa,

    Proceedings of 4th International Conference on Jets, Wakes and Separated Flows   ( ICJWSF2013-1193 )   1 - 4   2013.09

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  • Development and Quantitative Validation of a Numerical Code using Highly Energy-Conservative Scheme Reviewed

    M. Watanabe, H. Suzuki, Y. Hasegawa, T. Ushijima

    Proceedings of 4th International Conference on Jets, Wakes and Separated Flows   ( ICJWSF2013- )   1 - 4   2013.09

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  • DNS on Multiscale-Generated Grid Turbulence using a Classical Grid Reviewed

    H. Suzuki, K. Nagata, Y. Sakai, T. Hayase, Y. Hasegawa, T. Ushijima

    Proceedings of the 8th International Symposium on Turbulence and Shear Flow Phenomena   ( HOM1E )   1 - 6   2013.08

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  • Fractal Analysis of Turbulent Mixing in Fractal-Generated Turbulence by Planar Laser-Induced Fluorescence Reviewed

    H. Suzuki, K. Nagata, Y. Sakai, and Y. Hasegawa

    Physica Scripta   2013 ( T155 )   2013.07

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  • An Attempt to Improve Accuracy of PIV using an Interpolation Method Reviewed

    H. Suzuki, T. Ushijima, Y. Hasegawa, K. Nagata, Y. Sakai

    Proceedings of 12th Asian Symposium on Visualization   ( 218 )   1 - 4   2013.05

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  • 直接数値計算による格子乱流の解析(不変量およびRottaモデルについて) Reviewed

    鈴木博貴,長田孝二,酒井康彦,早瀬敏幸,長谷川豊,牛島達夫

    日本機械学会論文集B編   79 ( 807 )   2363 - 2374   2013.04

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  • Improved PIV Analysis Using an Interpolation Technique(Analysis on Improvement Effects of the Fourier Interpolation Using Quasi Particle-Images) Reviewed

    78 ( 790 )   1248 - 1259   2012.06

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1299/kikaib.78.1248

  • Blade Loads Analysis of HAWT Rotor by using Fluid-Oscillation Coupled Analysis (Aerodynamic Effects of Turbine Tower) Reviewed

    Yutaka Hasegawa, Masaaki Ohira, Shingo Koga, Koji Kikuyama

    Proceedings of the Eighth KSME-JSME Thermal and Fluids Engineering Conference   1 - 2   2012.03

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  • Unsteady Aerodynamic Characteristics of Small HAWT Rotor due to Speed Control Reviewed

    Shingo Koga, Yutaka Hasegawa, Koji Kikuyama

    Proceedings of International Symposium on EcoTopia Science 2011   1 - 2   2011.12

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  • Numerical Study on Aerodynamic Characteristics of Wing-Stroke Wind Turbine Reviewed

    Masaaki Ohira, Yutaka Hasegawa, Yusuke Takagi

    Proceedings of International Symposium on EcoTopia Science 2011   1 - 2   2011.12

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  • Bihavior of heteroatom compounds in hydrothermal gasification of biowatste for hydrogen production Reviewed

    Sevigihan Yildiz Bircan, Humihiko Kamoshita, Ryuichi Kanamori, Yasuyuki Ishida, Kozo Matsumoto, Yutaka Hasegawa, Kuniyuki Kitagawa

    Applied Energy   88   4874 - 4878   2011.08

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    DOI: 10.1016/j.apenergy.2011.06.031

    Other Link: https://www.journals.elsevier.com/applied-energy

  • GC-MS ultra trace analysis of dioxins produced through hydrothermal gasification of biowastes Reviewed

    Sevigihan Yildiz Bircan, Ryuichi Kanamori, Yutaka Hasegawa, Kazuo Ohba, Kozo Matsumoto, Kuniyuki Kitagawa

    Microchemical Journal   99   556 - 560   2011.07

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    バイオ系廃棄物を水熱処理した際に生じるダイオキシンにつき,GC-MSを利用して分析を行い,ダイオキシンの発生条件,発生量を調べた.

    DOI: 10.1016/j.microc.2011.07.009

    Other Link: https://www.journals.elsevier.com/microchemical-journal

  • Flapwise and Edgewise Blade Loads Analysis of HAWT Rotor by using Fluid-Oscillation Coupled Calculation Model Reviewed

    Yutaka Hasegawa, Yusuke Takagi, Junske Murata, Koji Kikuyama

    Proceedings of ASME-JSME-KSME Joint Fluid Engineering Conference   1 - 6   2011.07

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  • Numerical Study of Aerodynamic Damping Effects on Oscillating Rotor Blade Reviewed

    Yutaka Hasegawa, Koichi Narita, Junsuke Murata, Hiroshi Imamura, Koji Kikuyama

    Renewable Energy 2010   1 - 4   2010.07

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    流体-振動連成解析モデルを用いて,水平軸風車のロータ翼がフラップ方向に振動している場合につき,翼に働く構造負荷,空力負荷を調べることにより,翼振動による空力的な減衰効果を明らかにした.

  • Fluid-Oscillation Coupled Analysis of Fatigue Loads on HAWT Rotor Blade for Turbulence Inflow Reviewed

    Yutaka Hasegawa, Junsuke Murata, Koichi Narita, Koji Kikuyama

    Proc. of R'09 Twin World Congress   1 - 6   2009.09

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    流体-振動連成解析モデルを用いて,翼フラップ方向振動と流入風の乱流特性が水平軸風車翼の構造系に働く負荷に及ぼす影響を空力負荷との比較において調べると共に,疲労負荷を明らかにした.

  • Fluid Oscillation Coupled Analysis for HAWT Rotor Blade (One Degree Freedom Weak Coupling Analysis with Hinge-Spring Model) Reviewed

    Hiroshi Imamura, Yutaka Hasegawa, Junsuke Murata, Sho Chihara, Daisuke Takezaki, Noritsugu Kamiya

    International Journal of Fluid Machinery and Systems   2 ( 3 )   197 - 205   2009.07

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    水平軸風車の翼根部にヒンジスプリングを想定した一自由度弱連成解析モデルを構築し,ロータ翼の振動(翼の固有振動数,加振周波数)が風車空力特性に及ぼす影響を明らかにした.

    Other Link: http://www.jstage.jst.go.jp/article/ijfms/2/3/197/_pdf/-char/ja/

  • 水平軸風車ロータ翼の疲労負荷に及ぼす複合的流入風条件の影響に関する数値解析 Reviewed

    村田淳介,長谷川豊,菊山功嗣

    日本機械学会論文集,B編   75 ( 752 )   761 - 769   2009.04

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    水平軸風車への複合的な流入風条件(ウィンドシア,ヨー偏角,乱流特性)がロータ翼の疲労負荷に及ぼす影響を数値解析により調べ,その非線形性を明らかにした.

  • Fatigue Loads Calculation of HAWT Rotor in Combined Inflow Conditions using Fluid-Oscillation Coupled Analysis Model Reviewed

    Yutaka Hasegawa, Junsuke Murata, Hiroshi Imamura, Naotsugu Kamiya,

    Proc. of European Wind Energy Conference and Exhibition 2009   1 - 6   2009.03

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    流体-振動連成解析モデルを用いて,複合的な流入風条件と翼振動が水平軸風車ロータ翼の疲労負荷に及ぼす影響を解析的に調べ,柔構造設計の効果を検証した.

  • 統計学的手法に基づくガスト形状の評価及び水平軸風車ロータ負荷解析への適用 Reviewed

    村田淳介,長谷川豊,成田浩一,田中皓太,今村博,菊山功嗣

    ターボ機械   37 ( 2 )   85 - 93   2009.02

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  • 水平軸風車ロータ空力負荷に及ぼすタワーの影響に関する数値解析 Reviewed

    村田淳介,長谷川豊,菊山功嗣

    日本機械学会論文集 B編   75 ( 749 )   101 - 109   2009.01

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  • Numerical Analysis of Combined Inflow Effects on Fatigue Loads of Horizontal Axis Wind Turbine Rotors Reviewed

    Junsuke Murata, Yutaka Hasegawa, Hiroshi Imamura

    Proc. of International Symposium on EcoTopia Science 2007   1 - 4   2007.11

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    水平軸風車への複合的な流入風条件(ウィンドシア,ヨー偏角,乱流特性)がロータ翼の疲労負荷に及ぼす影響を空力負荷解析モデルとレインフローカウンティング法に基づき,解析的に明らかにした.

  • Study on Flow Characteristics in Rotor Disk Rim Seal of Gas Turbine (Effects of Uneven Velocity Profile in Turbine Main Flow) Reviewed

    T. Ueda, Yutataka Hasegawa, Takashi Kubo, Takashi Yamada,

    Proc. of International Symposium on EcoTopia Science 2007   1 - 4   2007.11

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    空冷用ガスタービンのロータディスクリムシール内流れ数値解析ならびにモデル実験により調べ,主流不均一性の影響が熱流動場に及ぼす影響を明らかにした.

  • Experimental Study on Influence of Wind Characteristics on Wind Turbine Performance Reviewed

    Yutaka Hasegawa, Yusuke Niwa, Hiroshi Imamura, Eiji Asakura

    Proc. of International Symposium on EcoTopia Science 2007   1 - 4   2007.11

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    屋外水平軸風車を対象に,流入風乱流特性と風車出力特性を同時測定し,両者の相関解析を行うことにより,流入風特性が風車ロータ空力特性に及ぼす動的な影響を明らかにした.

  • Fluid-Oscillation Coupled Analysis for Horizontal Axis Wind Turbine Rotor Blade Reviewed

    Naotsugu Kamiya, Yutaka Hasegawa, Hiroshi Imamura, Junsuke Murata, Sho Chihara

    Proc. of International Symposium on EcoTopia Science 2007   1 - 4   2007.11

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    パネル法に基づく空力解析モデルと,マルチボディダイナミクスに基づく翼振動モデルを弱連成させ,斜め流入風条件での翼振動の影響を解析的に調べた.

  • Fundamental Study on Water Injection Cooling System of Centrifugal Compressor for Micro Gas Turbine Invited Reviewed

    N. H. Hoang, Y. Hasegawa, S. Maekawa

    Proc. of 9th Asian International Conference on Fluid Machinery   AICFM9 ( 304 )   1 - 6   2007.10

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    マイクロガスタービン用小型遠心圧縮機の圧縮仕事を低減するために,超音波振動子を用いて微細水噴霧質を発生させ,圧縮機吸込流れに導入する方法を提案し,モデル解析・実験により効果の検証を行った.

  • バイオエタノールを用いる化学再生ガスタービンシステムに関するエネルギープロセス解析 Reviewed

    朴海洋,小林敬幸,中川二彦,北川邦行,長谷川豊,小島義弘

    日本機械学会論文集 B編   73 ( 730 )   1331 - 1337   2007.06

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    マイクロガスタービンの高効率化を図るために,バイオエタノールを用いる化学再生ガスタービンシステムを提案し,エネルギープロセス解析で有効性を検証した.

  • 水平軸風車ロータ翼の流体振動連成解析(ヒンジ-スプリングモデルによる1自由度弱連成解析) Reviewed

    今村博,長谷川豊,村田淳介,千原翔,小林康平,竹崎大輔

    ターボ機械   35 ( 6 )   321 - 329   2007.06

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    水平軸風車ロータ翼の振動が風車空力特性に及ぼす影響を調べるために,翼根部にヒンジスプリングを想定した一自由度弱連成解析モデルを構築した.

  • Statistical Evaluation of Temporal and Spatial Variations of Wind Velocity in Gust Event Reviewed

    Y. Hasegawa, J. Murata, H. Imamura, K.Tanaka, E. Asakura, K. Kikuyama

    Proc. of European Wind Energy Conference and Exhibition 2007   1 - 6   2007.05

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    複雑地形状の風況精査結果を統計学的手法で解析することによりガスト時間的・空間的な形状を同定し,提案されている2つのモデルの妥当性を評価した.

  • Study on Exit Flow of a High-Specific Speed Centrifugal Pump Impeller in Cavitating Condition (Comparison with a Low-Specific Speed Impeller) Reviewed

    Y. Hasegawa, E. Asakura, K. Kikuyama, M. Tani, H. Shintani

    Proc. of 23rd IAHR Symposium on Hydraulic Machinery and Systems   23 ( 2-5 )   153 - 158   2006.10

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    比較的高比速度の遠心ポンプ羽根車を対象に,キャビテーション発生時の羽根車出口流れ,ポンプ性能を測定し,キャビテーションによる性能低下の要因を解明した.

  • Calculation of Aerodynamic Force on Horizontal Axis Wind Turbine Rotor Exerted by Tower Effect Reviewed

    J. Murata, Y. Hasegawa, H. Imamura, S. Hotta

    Proc. of European Wind Energy Conference and Exhibition 2006   ( BL3 )   1 - 6   2006.05

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    加速度ポテンシャル法に基づきロータ空力モデル,タワー空力モデルを構築し,上流式水平軸風車ロータ空力負荷に及ぼすタワー直径,ロータ面からの距離,ウィンドシアの影響を明らかにした.

  • 複雑地形上を流れる接地層の乱流特性解析(スペクトル及びコヒーレンスの評価) Reviewed

    長谷川豊,鈴木一司,今村博,菊山功嗣,幡原邦彦,真島佑輔

    日本機械学会論文集 B編   71 ( 711 )   2717 - 2724   2005.12

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    愛知県設楽町における風況精査に基づき,地形起伏と風速が大気乱流のスペクトルとコヒーレンスに及ぼす影響を調べ,流入風数値モデルの修正提案を行った.

  • 渦法における渦度再分配法を併用した壁面渦要素導入法の開発 Reviewed

    今村博,竹崎大輔,長谷川豊,菊山功嗣

    ながれ   24 ( 4 )   1329 - 1337   2005.08

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    水平軸風車翼型周り流れを解析するために,渦法における渦度再分配法を併用した壁面渦要素導入方法を開発し,祖の妥当性を検証した.

  • フィン付伝熱管群における熱流動特性(フィン高さが流動損失特性に及ぼす影響) Reviewed

    川口清司,奥井健一,浅井俊博,長谷川豊

    日本機械学会論文集 B編   71 ( 707 )   1862 - 1869   2005.07

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    自動車用ラジエータに使用するフィン付伝熱管群において,管内フィンの切り欠き形状とフィン高さが伝熱管群の流動損失特性に及ぼす影響を系統的な実験により明らかにした.

  • フィン付伝熱管群における熱流動特性(フィン高さが熱伝達特性に及ぼす影響) Reviewed

    川口清司,奥井健一,浅井俊博,長谷川豊

    日本機械学会論文集 B編   71 ( 707 )   1854 - 1861   2005.07

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    自動車用ラジエータに使用するフィン付伝熱管群において,管内フィンの切り欠き形状とフィン高さが伝熱管群の熱伝達特性に及ぼす影響を系統的な実験により明らかにした.

  • Study of Boundary Layer Flow in Rotating Curvature System (Effects of Wall Curvature and System Rotation on Goertler Type Instability) Reviewed

    Yutaka Hasegawa, Koji Kikuyama, Michio Nishikawa, Ryo Ihara

    Proc. of 4th International Symposium on Turbulence and Shear Flow Phenomena   TSFP4 ( 147 )   1 - 6   2005.06

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    凹面上境界層流れに対して,回転率,流路曲率が,境界層中に発達するゲルトラ渦の2次不安定性に及ぼす影響を速度分布測定と可視化実験により明らかにした.

  • Topographical Effects on Turbulent Characteristics of Wind Flow over Hilly Terrain Reviewed

    Yutaka Hasegawa Hiroshi Imamura, Koji Kikuyama, Hitoshi Suzuki, Yusuke Majima, Yukiko Furusawa

    Proceedings of 4th International Symposium on Turbulence and Shear Flow Phenomena   TSFP4 ( 149 )   1 - 6   2005.06

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    複雑地形における乱流特性を明らかにするために,ベル形断面を持つ2次元・3次元丘陵を越える境界層流れを風洞実験とCFDにより調べ,乱流特性を明らかにした.

  • 回転曲面上の境界層流れに関する研究(ゲルトラ流れに発生する二次不安定性に及ぼす流路曲率および系の回転の影響) Reviewed

    西川道夫,長谷川豊,菊山功嗣,井原亮一

    日本機械学会論文集 B編   71 ( 705 )   1329 - 1337   2005.05

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    凹面上境界層流れに対して,回転により壁面方向に働くコリオリの力,曲率による遠心力が,境界層中に発達するゲルトラ渦の2次不安定性に及ぼす影響を速度分布測定と可視化実験により明らかにした.

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