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Feedback Control of Flow Separation Using DBD Plasma Actuator

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JAXA Supercomputer System Annual Report April 2018-March 2019 Report Number: R18EACA26 Subject Category: JSS2 Inter-University Research PDF Responsible Representative: Kengo Asada, Tokyo University of Science, Department of Information and Computer Technology, Postdoctoral Researcher Contact Information: Kengo Asada(asada@rs.tus.ac.jp) Members: Kengo Asada, Takuto Ogawa Abstract The project develops flow control technic by using dielectric barrier discharge (DBD) plasma actuator to establish high efficient and robust vehicle systems such as rockets, aircrafts, and motor vehicles. We propose and demonstrate feedback control methods to・・・<<read more>>

Influence of Fineness Ratio on Aerodynamic Characteristics of Fight Vehicles

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JAXA Supercomputer System Annual Report April 2018-March 2019 Report Number: R18EACA21 Subject Category: JSS2 Inter-University Research PDF Responsible Representative: Keiichi Kitamura, Associate Professor, Yokohama National University Contact Information: Ayano Inatomi(inatomi-ayano-ng@ynu.jp) Members: Ayano Inatomi, Keiichi Kitamura Abstract Generally, aircraft and rockets are slender bodies whose cross sections are close to a circle. In these slender bodies, the aerodynamic characteristics greatly change at a large angle of attack (AoA). As an influence from the change in the aerodynamic characteristics, for example, the・・・<<read more>>

The Effect of Protuberant Devices on Aerodynamic Characteristics of Slender Body Vehicle

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JAXA Supercomputer System Annual Report April 2018-March 2019 Report Number: R18EACA20 Subject Category: JSS2 Inter-University Research PDF Responsible Representative: Keiichi Kitamura, Associate Professor, Yokohama National University Contact Information: Toshiaki Harada(harada-toshiaki-vt@ynu.jp) Members: Toshiaki Harada, Keiichi Kitamura Abstract It is important for rocket developments to quantitatively estimate the influence of protuberances in the flight vehicles which create asymmetry of flow around the vehicles and aerodynamic forces. Using fluid numerical computation, it is expected that we obtain a guideline for the protuberance choice・・・<<read more>>

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 2018-March 2019 Report Number: R18EACA13 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>>

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

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JAXA Supercomputer System Annual Report April 2018-March 2019 Report Number: R18EACA10 Subject Category: JSS2 Inter-University Research PDF Responsible Representative: Shun Takahashi, Tokai Univercity Contact Information: Shun Takahashi, Tokai Univercity(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 for・・・<<read more>>