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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 April 2019-March 2020 Report Number: R19EACA13 Subject Category: JSS2 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>>

Construction of LES model for high Mach number multiphase flow based on DNS analysis

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JAXA Supercomputer System Annual Report April 2019-March 2020 Report Number: R19EACA11 Subject Category: JSS2 Inter-University Research PDF Responsible Representative: Kota Fukuda, Ascossiate Professor, Tokai University Contact Information: Kota Fukuda, Ascossiate Professor, Tokai University(fukuda@tokai-u.jp) Members: Kota Fukuda, Taku Nonomura Abstract In order to construct LES model for high Mach number multi-phase turbulent flow, direct numerical simulation (DNS) of high Mach number and low Reynolds number flow around a particle will be carried out and construction of its data base and examination・・・<<read more>>

Development and application of multiphase flow solver for moving object using Cartesian grid

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JAXA Supercomputer System Annual Report April 2019-March 2020 Report Number: R19EACA10 Subject Category: JSS2 Inter-University Research PDF Responsible Representative: Shun Takahashi, Tokai University Contact Information: Shun Takahashi(takahasi@tokai-u.jp) Members: Shun Takahashi, Taku Nonomura Abstract The particulate flow is solved by the direct numerical simualtion using Euler-Euler approarch method. The objective is to investigate the interaction between the flow and particles and to develop the particulate model for the large scale compressible multiphase flow simulation. Reference URL N/A Reasons and benefits of・・・<<read more>>

Research and development for system integration of silent supersonic airplane technologies

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JAXA Supercomputer System Annual Report April 2019-March 2020 Report Number: R19EA3800 Subject Category: Aeronautical Technology PDF Responsible Representative: Yoshikazu Makino, Aeronautical Technology Directorate, Aviation Systems Research Unit Contact Information: Hiroaki Ishikawa(ishikawa.hiroaki2@jaxa.jp) Members: Junichi Akatsuka, Naoko Tokugawa, Hiroaki Ishikawa, Yoshikazu Makino, Dongyoun Kwak, Keisuke Ohira, Atsushi Ueno, Satoshi Kondo, Tatsunori Yuhara, Ryo Shimada, Shinya Koganezawa Abstract It is important to acquire world-class high level technology in order to enhance the international competitiveness of Japan’s aircraft manufacturing industry, especially for supersonic transport.・・・<<read more>>

Cooperative Research: unsteady flow simulation with unstructured-grid CFD code

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JAXA Supercomputer System Annual Report April 2019-March 2020 Report Number: R19EA3210 Subject Category: Aeronautical Technology PDF Responsible Representative: Takashi Aoyama, Aeronautical Technology Directorate, Numerical Simulation Research Unit Contact Information: Atsushi Hashimoto, Aeronautical Technology Research Unit, Numerical Simulation Research Unit(hashimoto.atsushi@jaxa.jp) Members: Atsushi Hashimoto, Takashi Ishida, Hideaki Sugawara, Keiji Ueshima, Minoru Yoshimoto, Takuya Ogura, Shinsuke Nishimura, Yukinori Morita, Kazuhiro Imai, Kei Nakanishi, Shigeru Kuchiishi, Takashi Aoyama, Kanako Yasue Abstract In order to simulate unsteady separated flow phenomena, we validate an unstructured-grid CFD・・・<<read more>>