JAXA Supercomputer System Annual Report April 2019-March 2020 Report Number: R19EACA34 Subject Category: JSS2 Inter-University Research PDF Responsible Representative: Ryo Nagata, Researcher, High Energy Accelerator Research Organization (KEK) Contact Information: Ryo Nagata(rnagata@post.kek.jp) Members: Ryo Nagata Abstract Primordial gravitational wave background is generically predicted by cosmic inflation theories. Amplitude of the waves indicates energy scale of cosmic inflation. LiteBIRD, the 2nd ISAS strategic large mission, makes a full-sky map of the microwave background polarization to detect a signal of the gravitational・・・<<read more>>
JAXA Supercomputer System Annual Report April 2019-March 2020 Report Number: R19EACA28 Subject Category: JSS2 Inter-University Research PDF Responsible Representative: Seiji Zenitani, Project Associate Professor, Kobe University Contact Information: Seiji Zenitani(zenitani@port.kobe-u.ac.jp) Members: Seiji Zenitani, Iku Shinohara, Takahiro Miyoshi Abstract This project investigates basic processes in space plasmas, by using supercomputer simulations. In particular, we study "magnetic reconnection" in space, an abrupt change in magnetic topology. In order to support research activities by ourselves and by other groups, we develop massively-parallel simulation・・・<<read more>>
JAXA Supercomputer System Annual Report April 2019-March 2020 Report Number: R19EACA20 Subject Category: JSS2 Inter-University Research PDF Responsible Representative: Keiichi Kitamura, Yokohama National University, Faculty of Engineering, Division of Systems Research Contact Information: Keiichi Kitamura(kitamura@ynu.ac.jp) Members: Keiichi Kitamura, Hiroyuki Takimoto, Naoya Hase, Hiroto Yaginuma Abstract In the velocity region where shock waves are generated, there are various difficulties in numerical calculations, as well as many undiscovered flow physics. In this study, we performed various numerical calculations under supersonic conditions: high-speed・・・<<read more>>
JAXA Supercomputer System Annual Report April 2019-March 2020 Report Number: R19EACA05 Subject Category: JSS2 Inter-University Research PDF Responsible Representative: Susumu Goto, Professor, Osaka University Contact Information: Susumu Goto(goto@me.es.osaka-u.ac.jp) Members: Susumu Goto, Yutaro Motoori, Ryo Araki, Tsukasa Shinohara, Sunao Oka, Atsushi Abe, Aoi Nishikawa, Yusuke Koide Abstract Since fully developed turbulence at high Reynolds numbers plays an important role in many systems of aerospace engineering, its prediction and control are important in various projects. We need to employ a turbulence model・・・<<read more>>
JAXA Supercomputer System Annual Report April 2019-March 2020 Report Number: R19EACA01 Subject Category: JSS2 Inter-University Research PDF Responsible Representative: Nobuyuki Tsuboi, Professor, Department of Mechanical and Control Engineering, Kyushu Institute of Technology Contact Information: Nobuyuki Tsuboi(tsuboi@mech.kyutech.ac.jp) Members: Nobuyuki Tsuboi, Kouhei Ozawa, Takahide Araki, Toshihiro Iwasa, Nicolas H. Jourdaine, Shota Goto, Kodai Shimomura, Takuro Yoshino, Tomohiro Watanabe, Taishi Amano, Kanta Iwasaki, Nobuhiro Kurita, Naomi Takeshima, Darshan Manjunath Abstract Fundamental studies on nozzles and combustors for Japanese rocket engines and supersonic engines・・・<<read more>>
