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Prediction and Modelling of Turbulence based on Machine Learning

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JAXA Supercomputer System Annual Report February 2023-January 2024 Report Number: R23EACA39 Subject Category: JSS Inter-University Research PDF Responsible Representative: Masanobu Inubushi, Associate Professor, Tokyo University of Science Contact Information: Masanobu Inubushi(inubushi@rs.tus.ac.jp) Members: Susumu Goto, Masanobu Inubushi, Satoshi Matsumoto, Naoki Sakata, Tomoki Sugihara, Hiroto Tanaka Abstract Turbulence models play essential roles in aerospace science and technology, such as flows around aircraft and of planetary atmospheres. They are rapidly empowered by machine learning methods and will be a crucial building block of・・・<<read more>>

Study on the enhancement of flow control authority using DBD plasma actuators

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JAXA Supercomputer System Annual Report February 2023-January 2024 Report Number: R23EACA26 Subject Category: JSS Inter-University Research PDF Responsible Representative: Kengo Asada, Postdoctral Researcher, 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 technology by using dielectric barrier discharge (DBD) plasma actuators to establish highly efficient and robust vehicle systems such as rockets, aircraft, and motor vehicles. We aim to enhance the・・・<<read more>>

Reynolds Number Effects on Aerodynamics of Slender Body with Protuberance

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JAXA Supercomputer System Annual Report February 2023-January 2024 Report Number: R23EACA21 Subject Category: JSS Inter-University Research PDF Responsible Representative: Keiichi Kitamura, Supervisor Associate Prof., Yokohama national university Contact Information: mineshima koya(mineshima-koya-kt@ynu.jp) Members: Kohei Kawai, Keiichi Kitamura, Tomohiro Mamashita, Koya Mineshima, Sora Yasui Abstract In previous studies on subscale models, the protuberance over the vehicle surface had created an asymmetric flow field and side forces. However, it was unclear whether similar results could be obtained at the actual launch vehicle scale.・・・<<read more>>

Numerical Fluid Analysis of Supersonic Flying Vehicle

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JAXA Supercomputer System Annual Report February 2023-January 2024 Report Number: R23EACA20 Subject Category: JSS Inter-University Research PDF Responsible Representative: Keiichi Kitamura, Associate Professor, Yokohama National University Contact Information: Keiichi Kitamura, Yokohama National University(kitamura@ynu.ac.jp) Members: Gaku Fukushima, Keiichi Kitamura, Kazuki Nimura, Yuta Tsukamoto Abstract This study investigates the aerodynamic characteristics of rockets and wings with shock waves. The first is to investigate the effect of ring-type protuberance, such as flanges, on the aerodynamic characteristics of rockets. The second is to select・・・<<read more>>

Numerical Study on Ionization Structure and Shock Wave Propagation for Improving Flight Performance of Beaming Propulsion Vehcile

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JAXA Supercomputer System Annual Report February 2023-January 2024 Report Number: R23EACA17 Subject Category: JSS Inter-University Research PDF Responsible Representative: Masayuki Takahashi, Associate Professor, Tohoku University Contact Information: Masayuki Takahashi, Tohoku University(masayuki.takahashi.c8@tohoku.ac.jp) Members: Koki Ito, Hiroyuki Suzuki, Soichiro Suzuki, Masayuki Takahashi Abstract In thus study, our objective is elucidating the ionization-front prpgation mechanism induced by high-power microwave in the microwave rocket. Reference URL N/A Reasons and benefits of using JAXA Supercomputer System The use of JAXA supercomputer is required to conduct・・・<<read more>>