JAXA Supercomputer System Annual Report February 2021-January 2022 Report Number: R21EACA12 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 Abstract In this study, we work on predicting aerodynamic characteristics of the “RV-X”, which is an experimental vehicle planned for flight tests. We conducted wind tunnel tests and numerical analysis supposing the low-speed flow during the return flight. The results of the numerical calculations were・・・<<read more>>
JAXA Supercomputer System Annual Report February 2021-January 2022 Report Number: R21EACA55 Subject Category: JSS Inter-University Research PDF Responsible Representative: Takayuki Nagata, Project Assistant Professor, Tohoku University Contact Information: Takayuki Nagata(nagata@tohoku.ac.jp) Members: Taku Nonomura, Takayuki Nagata Abstract Compressible flow around twin particles is investigated by the direct numerical simulation of the Navier-Stokes equations at Reynolds number of O(10^2). The objective of the present study is to obtain fundamental insight into the effects of aerodynamic interference between particles in subsonic to supersonic・・・<<read more>>
JAXA Supercomputer System Annual Report February 2021-January 2022 Report Number: R21EACA49 Subject Category: JSS Inter-University Research PDF Responsible Representative: Taku Nonomura, Associate Professor, Tohoku University Contact Information: Taku Nonomura(nonomura@tohoku.ac.jp) Members: Taku Nonomura, Takayuki Nagata Abstract Large-eddy simulations (LES) of the compressible flow around the plate with Reynolds numbers of O (10^3) -O (10^4) are performed. The compressibility effects on the laminar separation bubble formed around the leading edge of the flat plate and turbulent transition are investigated. The flat plate・・・<<read more>>
JAXA Supercomputer System Annual Report February 2021-January 2022 Report Number: R21EA0714 Subject Category: Aeronautical Technology PDF Responsible Representative: Mitsumasa Makida(JAXA, Aeronautical Technology Directorate) Contact Information: Mitsumasa Makida(Aeronautical Technology Directorate)(makida.mitsumasa@jaxa.jp) Members: Mitsumasa Makida, Naoki Nakamura, Takashi Ishiyama Abstract In the development process of aircraft combustors, air mass flow distribution between fuel nozzles and cooling air holes on the liner effects performances of combustors. In this research, we conduct combustion simulations of internal flow inside the combustor which faithfully simulates the configuration・・・<<read more>>
JAXA Supercomputer System Annual Report February 2021-January 2022 Report Number: R21EACA26 Subject Category: JSS Inter-University Research PDF Responsible Representative: Kengo Asada, Assistant Professor, Department of Information and Computer Technology, Faculty of Engineering, Tokyo University of Science Contact Information: Kengo Asada(asada@rs.tus.ac.jp) Members: Kengo Asada, Takuto Ogawa Abstract The project develops flow control technic by using dielectric barrier discharge (DBD) plasma actuator to establish high efficient and robust vehicle systems such as rockets, aircrafts, and motor vehicles. We propose and demonstrate feedback・・・<<read more>>