JAXA Supercomputer System Annual Report April 2017-March 2018 Report Number: R17ETET09 Subject Category: Skills Acquisition System PDF Responsible Representative: Yasutada Tanabe, Aeronautical Technology Directorate, Next Generation Aeronautical Innovation Hub Center Contact Information: Keita Kimura k.kimura@ilab.eco.rcast.u-tokyo.ac.jp Members: Keita Kimura, Yasutada Tanabe, Yousuke Shinozaki Abstract In a large wind farm (arrays of wind turbines), wind turbine wake can cause power deficits or/and additional fatigue in turbine stands in wake region. In this study, several wake simulations were performed to obtain the characteristics・・・<<read more>>
JAXA Supercomputer System Annual Report April 2017-March 2018 Report Number: R17ETET10 Subject Category: Skills Acquisition System PDF Responsible Representative: Takashi Aoyama, Aeronautical Technology Directorate, Numerical Simulation Research Unit Contact Information: Atsushi Hashimoto hashimoto.atsushi@jaxa.jp Members: Tsukasa Nagao, Hidekazu Yoshida, Masakazu Sano Abstract JAXA is developing a hypersonic turbojet which work at less than Mach 1 to Mach 5. The intake of the hypersonic turbojet reduces air speed and compresses air. We conducted the CFD analysis to understand these flow field and・・・<<read more>>
JAXA Supercomputer System Annual Report April 2017-March 2018 Report Number: R17ETET12 Subject Category: Skills Acquisition System PDF Responsible Representative: Takashi Takahashi, Aeronautical Technology Directorate, Numerical Simulation Research Unit Contact Information: Kenji Kobayashi knjkoba@chofu.jaxa.jp Members: Kenji Kobayashi Abstract Coherent structures around a re-entry capsule were investigated using the unsteady flow solver FaSTAR. A re-entry capsule shows dynamic instability in subsonic and transonic speeds. This study focused on the subsonic unsteady flow around the capsule and investigated the mechanism of the dynamic・・・<<read more>>
JAXA Supercomputer System Annual Report April 2017-March 2018 Report Number: R17ETET15 Subject Category: Skills Acquisition System PDF Responsible Representative: Yoshikazu Makino, Aeronautical Technology Directorate Next Generation Aeronautical Innovation Hub Center Contact Information: Dongyoun Kwak kwak.dongyoun@jaxa.jp Members: Hotaka Kobayashi, Yutaro Yamasaki, Dongyoun Kwak, Shihoko Endo, Hiroki Adachi, Shoya Ogino Abstract Innovative drag reduction technologies are investigated to reduce the fuel consumption for a conventional aircraft configuration. Aircraft noise prediction technologies and the conceptual design technologies are also developed for future aircraft・・・<<read more>>
JAXA Supercomputer System Annual Report April 2017-March 2018 Report Number: R17ETET17 Subject Category: Skills Acquisition System PDF Responsible Representative: Takashi Aoyama, Aeronautical Technology Directorate, Numerical Simulation Research Unit Contact Information: Takashi Ishida ishida.takashi@jaxa.jp Members: Toru Yamaya, Daichi Asaoka Abstract The purpose of this research is to construct a collision model considering the influence of bulk viscosity and verify the stability in high Reynolds number flow analysis. In order to compare the computational stability and calculation time using SRT (Single-Relaxation Time)・・・<<read more>>
