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NLFFF calculations of the solar coronal magnetic field based on Hinode observations

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JAXA Supercomputer System Annual Report April 2020-March 2021 Report Number: R20EU0912 Subject Category: Space and Astronautical Science PDF Responsible Representative: Yoshifumi Saito,, Institute of Space and Astronautical Science, Department of Solar System Sciences Contact Information: Toshifumi Shimizu(shimizu.toshifumi@jaxa.jp) Members: Yusuke Kawabata, Toshifumi Shimizu, Takahiro Hasegawa Abstract Our study focuses on understanding of the mechanism responsible for the occurrence of the solar flares. We derive 3D magnetic field structure in the corona by performing a 3D magnetohydrodynamics simulation using vector magnetic field・・・<<read more>>

Numerical Plasma Simulation on Advanced Space Propulsion Systems

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JAXA Supercomputer System Annual Report April 2020-March 2021 Report Number: R20EU0904 Subject Category: Space and Astronautical Science PDF Responsible Representative: Ikkoh Funaki, Associate Professor, ISAS Contact Information: Ikkoh Funaki(funaki.ikkoh@jaxa.jp) Members: Shitan Tauchi, Ryota Hara, Ryuta Futada, Yuki Murayama Abstract Due to the limitation of the existing spacecraft technology level, it is very difficult to enable solar system explorations in a quick and cost-effective mannger. Objective of this study is to obtain a breakthrough spacecraft propulsion technology that enables solar system・・・<<read more>>

Study of high speed fluid dynamics

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JAXA Supercomputer System Annual Report April 2020-March 2021 Report Number: R20EU0902 Subject Category: Space and Astronautical Science PDF Responsible Representative: Akira Oyama, Associate Professor, Institute of Space and Astronautical Science, JAXA Contact Information: Akira Oyama(oyama@flab.isas.jaxa.jp) Members: Akira Oyama, Shigetaka Kawai, Satoshi Sekimoto, Daiki Terakado, Satoshi Shimomura, Taku Nonomura, Shota Taniguchi, Bimo Dwianto, Takuma Saito, Naruhiko Nimura, Kento Kaneko, Yuuki Fukushima, Motoki Sato Abstract We conduct fundamental research on aerodynamics such as aerodynamic design of Mars aircraft. Reference URL Please refer・・・<<read more>>

The modeling of Crossflow Type Atomization

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JAXA Supercomputer System Annual Report April 2020-March 2021 Report Number: R20ETET51 Subject Category: Skills Acquisition System PDF Responsible Representative: AOYAMA Takashi, Director, Aeronautical Technology Directrate, Numerical Simulation Research Unit Contact Information: Yukari Sakano(y.sakano@akane.waseda.jp) Members: Yukari Sakano Abstract The purpose of the research is to construct the numerical model of cross flow atomization which can predict the particle size distribution precisely and efficiently. As the previous models recognized all droplets as spheres and caused irregularities, this study aims to consider droplets’・・・<<read more>>

Numerical Simulation of the Ram Combustor

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JAXA Supercomputer System Annual Report April 2020-March 2021 Report Number: R20ETET50 Subject Category: Skills Acquisition System PDF Responsible Representative: AOYAMA Takashi, Director, Aeronautical Technology Directrate, Numerical Simulation Research Unit Contact Information: Kazuya Uchiyama(kazuchiyama@toki.waseda.jp) Members: Kazuya Uchiyama Abstract As the first stage of research and development aimed at realizing hypersonic aircrafts, High-Mach Integrated Control Experiment (HIMICO) is underway by JAXA and universities. In this experiment, the ramjet engine using gaseous hydrogen fuel will be mounted on the experimental aircraft. Self-ignition has・・・<<read more>>