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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>>

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 2022-January 2023 Report Number: R22EACA16 Subject Category: JSS Inter-University Research PDF Responsible Representative: Naofumi Ohnishi, Professor, Tohoku University Contact Information: Naofumi Ohnishi(naohnishi@tohoku.ac.jp) Members: Naofumi Ohnishi, Shintaro Sato, Hideto Tamura 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>>

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>>

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>>

Development of Aerodynamic Optimization Library: Harmonee

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JAXA Supercomputer System Annual Report February 2022-January 2023 Report Number: R22EA3202 Subject Category: Aeronautical Technology PDF Responsible Representative: Atsushi Hashimoto, Manager, Aviation Technology Directorate, Aircraft Lifecycle Innovation Hub Contact Information: Mami Hayakawa(hayakawa.mami@jaxa.jp) Members: Atsushi Hashimoto, Mami Hayakawa, Takashi Ishida, Masahiro Kanazaki, Shigeru Kuchiishi, Katsuhito Kozawa, Kohji Suzuki, Yukinori Morita, Takatoshi Nakayama, Shinsuke Nishimura, Kei Nakanishi, Takuya Ogura, Tetsuji Ogawa, Kyohei Sawada, Kazufumi Uwatoko, Minoru Yoshimoto Abstract An aerodynamic optimization library "Harmonee," which uses the unstructured CFD code FaSTAR, is develped・・・<<read more>>