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Numerical Study on Rotor Performance of Mars Helicopter

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JAXA Supercomputer System Annual Report February 2022-January 2023 Report Number: R22EACA41 Subject Category: JSS Inter-University Research PDF Responsible Representative: Makoto Sato, Associate Professor, Kogakuin University Contact Information: Makoto Sato, Kogakuin University(msato@cc.kogakuin.ac.jp) Members: Makoto Sato, Kota Yoshikawa Abstract A Mars helicopter “HAMILTON” has been developed by JAXA, Tokyo Metropolitan University and Kogakuin University. Since the atomospheric density on Mars is about 1/100, the sound of speed is about 3/4 compared with those on Earth, we need to develop the high perfmance・・・<<read more>>

Numerical Study on Propeller Slipstream Effects on Objects at Low Reynolds Number

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JAXA Supercomputer System Annual Report February 2022-January 2023 Report Number: R22EACA43 Subject Category: JSS Inter-University Research PDF Responsible Representative: Keiichi Kitamura, Associate professor, Yokohama National University Contact Information: Yoshikatsu Furusawa(furusawa-yoshikatsu-vz@ynu.jp) Members: Yoshikatsu Furusawa, Keiichi Kitamura, Keita Suzuki, Shunya Sakatsume Abstract As a new form of a Mars exploration vehicle, research and development of a propeller-driven Mars airplane are progressing. Because the low atmospheric density on Mars causes the flow around the Mars airplane at low Reynolds numbers, the flow field・・・<<read more>>

Fadamental numerical analysis on detonation propagation

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JAXA Supercomputer System Annual Report February 2022-January 2023 Report Number: R22EACA45 Subject Category: JSS Inter-University Research PDF Responsible Representative: Toshiharu Mizukaki, Professor, Tokai University Contact Information: Toshiharu Mizukaki, Professor, Tokai University(mzkk@tsc.u-tokai.ac.jp) Members: Toshiharu Mizukaki, Faming Wang Abstract For fundamental study on propagation of detonation waves inside rotating detonatio engines, fundamental numerical analysis using CHARIOT was done. In FY2022, 2D numerical analysis on propagation of detonation waves inside a rotating detonation engine with C2H4/O2 and H2/AIR mixture gases have been calucurated.・・・<<read more>>

Rossby-wave nonlinear interactions and large-scale structure formation in two-dimensional turbulence on a rotating sphere

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JAXA Supercomputer System Annual Report February 2022-January 2023 Report Number: R22EACA46 Subject Category: JSS Inter-University Research PDF Responsible Representative: Kiori Obuse, associate professor, Okayama University Contact Information: Kiori Obuse(obuse@okayama-u.ac.jp) Members: Yusuke Hagimori, Kiori Obuse Abstract Two-dimensional barotropic model on a rotating sphere is one of the simplest mathematical models describing the dynamics of planetary atmospheres. The two -dimensional turbulence shows the spontaneous formation of large-scale zonal flows similar to those seen on giant gas planets such as Jupiter. However, this・・・<<read more>>

Application of distributed micro plasma actuators

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JAXA Supercomputer System Annual Report February 2022-January 2023 Report Number: R22EACA47 Subject Category: JSS Inter-University Research PDF Responsible Representative: Takashi Matsuno, Associate Professor, Tottori University Contact Information: Takashi Matsuno(matsuno@tottori-u.ac.jp) Members: Takeo Hoshino, Rikiya Hata, Masahiro Kanazaki, Daisuke Kikuchi, Yuki Kishi, Seiichiro Morizawa, Takashi Matsuno, Takuya Nankaku, Taisei Nishimura Abstract Plasma actuators (PAs) are flow control devices that use discharged plasma to generate wall jets from smooth surfaces. In recent years, a method of generating a distribution of body force on・・・<<read more>>