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Numerical Simulations of Fully Developed Turbulence

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JAXA Supercomputer System Annual Report February 2024-January 2025 Report Number: R24EACA05 Subject Category: JSS Inter-University Research PDF Responsible Representative: Susumu Goto, Professor, Osaka University Contact Information: Susumu Goto(s.goto.es@osaka-u.ac.jp) Members: Keisuke Endo, Takahito Fujimoto, Susumu Goto, Wataru Iwashita, Ryusuke Inoue, Yusuke Koide, Shota Kukimoto, Yutaro Motoori, Satoshi Matsumoto, Hayato Masuda, Gendai Nakano, Nozomu Osaka, Keita Okubo, Akito Oda, Masahiro Suzuki, Kodai Saheki, Kentaro Tanaka, Daiki Watanabe, Kiwamu Yoshii, Napat Lilittrakul Abstract Most of flows around us are turbulence, and their prediction・・・<<read more>>

Numerical Study on Aerodynamic Characteristics of Reusable Slender Body Configuration

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JAXA Supercomputer System Annual Report February 2024-January 2025 Report Number: R24EACA12 Subject Category: JSS Inter-University Research PDF Responsible Representative: Keiichi Kitamura, Yokohama National University, Faculty of Engineering, Associate Professor Contact Information: Keiichi Kitamura, Yokohama National University, Faculty of Engineering, Associate Professor(kitamura@ynu.ac.jp) Members: Yuka Hara, Hibiki Kumai, Keiichi Kitamura, Tomohiro Mamashita Abstract As space exploration becomes more active, a demand for more frequent and economical space transportation systems is increasing. Therefore, researches on reusable launch vehicles are being conducted around the・・・<<read more>>

Studies on nonlinear vortex dynamics in the later-stage of laminar-turbulent transition in compressible boundary layers

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JAXA Supercomputer System Annual Report February 2024-January 2025 Report Number: R24EACA13 Subject Category: JSS Inter-University Research PDF Responsible Representative: Kazuo Matsuura, Associate Professor, Ehime University, Graduate School of Science and Engineering Contact Information: Kazuo Matsuura(kazuo.matsuura@g.matsuyama-u.ac.jp) Members: Kazuo Matsuura Abstract In hypersonic transitional flows, there are many complicated factors such as density fluctuation and temperature fluctuation due to the co-existence of the region slower than the speed of sound and the region faster than the speed of sound inside the boundary・・・<<read more>>

Three-dimensional numerical simulation of discharge and flow related to airflow control using plasma actuator

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JAXA Supercomputer System Annual Report February 2024-January 2025 Report Number: R24EACA16 Subject Category: JSS Inter-University Research PDF Responsible Representative: Naofumi Ohnishi, Professor, Tohoku University Contact Information: Naofumi Ohnishi(naohnishi@tohoku.ac.jp) Members: Rei Maeta, Naofumi Ohnishi, Shintaro Sato Abstract Plasma actuator has attracted attention as a fluid control device using dielectric barrier discharge. In the experimental study, it has been pointed out that the discharge has a spanwise distribution of the electrode and has a three-dimensional structure. The three-dimensional structure affects the induced・・・<<read more>>

Numerical Study on Ionization Structure and Shock Wave Propagation for Improving Flight Performance of Beaming Propulsion Vehcile

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JAXA Supercomputer System Annual Report February 2024-January 2025 Report Number: R24EACA17 Subject Category: JSS Inter-University Research PDF Responsible Representative: Masayuki Takahashi, Associate Professor, Tohoku University Contact Information: Masayuki Takahashi, Tohoku University(masayuki.takahashi.c8@tohoku.ac.jp) Members: Koki Ito, Maho Matsukura, Hiroyuki Suzuki, Soichiro Suzuki, Masayuki Takahashi, Sakira Uno Abstract Objective of this study is elucidating mechanism of the ionization-front propagation induced by high-power microwave beam in microwave rockets. Reference URL N/A Reasons and benefits of using JAXA Supercomputer System In this study, we conduct・・・<<read more>>