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Study on development of satellite-based ocean data assimilation system

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JAXA Supercomputer System Annual Report April 2018-March 2019 Report Number: R18ER2402 Subject Category: Space Technology PDF Responsible Representative: Naoto Matsuura, Director, Space Technology Directrate I, Earth Observation Research Center Contact Information: Misako Kachi(kachi.misako@jaxa.jp) Members: Misako Kachi, Tsutomu Hihara, Hidenori Aiki, Shun Ohishi Abstract To enable satellite information ore familiar and easy to utilize, we develop "ocean forecast" without missing area by using the ocean model and data assimilation system with the highest spatial resolution (about 3km) in Japan to utilize・・・<<read more>>

High-Resolution, Efficient CFD Methods by Second Slope Limiter for Transonic Speeds

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JAXA Supercomputer System Annual Report April 2018-March 2019 Report Number: R18EDA201N10 Subject Category: Aeronautical Technology PDF Responsible Representative: Takashi Aoyama, Aeronautical Technology Directorate, Numerical Simulation Research Unit Contact Information: Keiichi Kitamura(kitamura@ynu.ac.jp) Members: Atsushi Hashimoto, Keiichi Kitamura, Kanta Fukumoto, Ayano Inatomi, Toshiaki Harada, Suguru Ogawa, Yuya Takagi, Hiroyuki Takimoto, Hiroto Yaginuma, Masashi Kanamori, Naoya Hase, Hayato Kawashima, Yoshikatsu Furusawa, Ryoyu Uematsu, Takeshi Fujimoto Abstract A high-resolution, Delayed DES has been conducted around whole the aircraft under the low-speed buffet condition. This・・・<<read more>>

Numerical Simulation of a Multiple Rotor UAV Inside Narrow Tunnels

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JAXA Supercomputer System Annual Report April 2018-March 2019 Report Number: R18ECMP17 Subject Category: Competitive Funding PDF Responsible Representative: Yasutada Tanabe, Senior Researcher, Aviation Systems Research Unit, Aeronautical Technology Directorate Contact Information: Yasutada Tanabe, Leader, Aeronautical Technology Directorate, Aviation Systems Research Unit(tan@chofu.jaxa.jp) Members: Yasutada Tanabe, Hideaki Sugawara, Riku Tanaka, Kuniyuki Takekawa Abstract Represented by the multiple rotor type UAV (Unmanned Aerial Vehicle), or so-called drone, the flying robot has been applied to disaster relief and other operations. However, the wind and・・・<<read more>>

Discharge-flow coupling analysis of DBD plasma actuator

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JAXA Supercomputer System Annual Report April 2018-March 2019 Report Number: R18EACA16 Subject Category: JSS2 Inter-University Research PDF Responsible Representative: Naofumi Ohnishi, Professor, Department of Aerospace Enginneering Contact Information: Naofumi Ohnishi(Ohnishi@rhd.mech.tohoku.ac.jp) Members: Naofumi Ohnishi, Shintaro Sato Abstract DBD (Dielectric Barrier Discharge) plasma actuator is a promising candidate as an active flow control device. The purpose of this project is to gain key factors for improvement of the induced-flow velocity and the control of the separation at high speed flow from the・・・<<read more>>

Computational Simulations for Aircraft Modification Design in the FQUROH Project

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JAXA Supercomputer System Annual Report April 2018-March 2019 Report Number: R18EA2800 Subject Category: Aeronautical Technology PDF Responsible Representative: Kazuomi Yamamoto, FQUROH Project Team, Aeronautical Technology Directorate Contact Information: Kazuomi Yamamoto(yamamoto.kazuomi@jaxa.jp) Members: Kazuomi Yamamoto, Yasushi Ito, Takehisa Takaishi, Mitsuhiro Murayama, Ryotaro Sakai, Tohru Hirai, Kentaro Tanaka, Kazuhisa Amemiya, Gen Nakano, Takashi Ishida Abstract The FQUROH project aims at raising the technical maturity level of the noise reduction technology for high-lift devices and landing gear, which draws international attention to reduce noise・・・<<read more>>