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Application of High-Fidelity Aerodynamic Analysis to Multidisciplinary Design Optimization for Reusable Space Transportation System

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JAXA Supercomputer System Annual Report February 2022-January 2023 Report Number: R22EACA48 Subject Category: JSS Inter-University Research PDF Responsible Representative: Takahiro Fujikawa, Junior Associate Professor, Faculty of Science and Technology, Tokyo University of Science Contact Information: Takahiro Fujikawa, Faculty of Science and Technology, Tokyo University of Science(fujikawa.takahiro@rs.tus.ac.jp) Members: Takahiro Fujikawa, Koichi Yonemoto, Shintaro Tejika, Tsuyoshi Ohtsuki, Ayaka Yamazaki, Hina Atarashi, Tomotaka Wstanabe, Yuto Nakayama Abstract Strong interactions between vehicle and trajectory during the design of winged reusable space transportation systems have・・・<<read more>>

Study of complessibility effect on low Reynolds number flow over a plate

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JAXA Supercomputer System Annual Report February 2022-January 2023 Report Number: R22EACA49 Subject Category: JSS Inter-University Research PDF Responsible Representative: Taku Nonomura, Associate Professor, Tohoku University Contact Information: Taku Nonomura, Tohoku University(nonomura@tohoku.ac.jp) Members: Taku Nonomura, Takayuki Nagata Abstract Large-eddy simulations (LES) of the compressible flow around the plate with Reynolds number O (10^3) -O (10^4) were performed. The compressibility effects on the laminar flow separation bubble formed around the leading edge of the flat plate and turbulent transition were investigated. The・・・<<read more>>

Numerical Simulations of Fully Developed Turbulence

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JAXA Supercomputer System Annual Report February 2022-January 2023 Report Number: R22EACA05 Subject Category: JSS Inter-University Research PDF Responsible Representative: Susumu Goto, Professor, Osaka University Contact Information: Susumu Goto(s.goto.es@oksa-u.ac.jp) Members: Ryo Araki, Hideto Awai, Kento Eguchi, Susumu Goto, Kenta Hayashi, Wataru Iwashita, Yusuke Koide, Yutaro Motoori, Hideki Murahata, Satoshi Matsumoto, Hayato Masuda, Hiroki Oba, Tomoki Sekigawa, Tomonori Sakaguchi, Hiroya Tanioka, Daiki Watanabe, Kiwamu Yoshii Abstract Since developed turbulence at high Reynolds numbers plays an important role in many systems of aerospace・・・<<read more>>

Computational Study on Aerodynamic Characteristics of Reusable Slender Body Configurations

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JAXA Supercomputer System Annual Report February 2022-January 2023 Report Number: R22EACA12 Subject Category: JSS Inter-University Research PDF Responsible Representative: Keiichi Kitamura, Associate Professor, Yokohama National University Contact Information: Tomohiro Mamashita(mamashita-tomohiro-nj@ynu.jp) Members: Keiichi Kitamura, Tomohiro Mamashita, Kouya Nakahara, Yuta Tsukamoto Abstract There is an urgent need for the practical application of reusable launch vehicles in order to reduce the cost of space transportation. It is necessary to understand the aerodynamic characteristics of reusable launch vehicles during return flight for safe landing,・・・<<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 2022-January 2023 Report Number: R22EACA13 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(matsuura.kazuo.mm@ehime-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>>