JAXA Supercomputer System Annual Report April 2019-March 2020 Report Number: R19EACA31 Subject Category: JSS2 Inter-University Research PDF Responsible Representative: Soshi Kawai, Professor, Tohoku University Contact Information: Ryo Hirai(hirai@klab.mech.tohoku.ac.jp) Members: Soshi Kawai, Ryo Hirai, Yuki Mori Abstract LES study of near-wall turbulent physics in heated/cooled-wall compressible turbulent boundary layers is conducted. The study reveals the relation between the mean-velocity profiles and turbulent structures in the conditions with wall heat flux. Also, Further, based on knowledge obtained in the LES study, improved・・・<<read more>>
JAXA Supercomputer System Annual Report April 2019-March 2020 Report Number: R19EACA14 Subject Category: JSS2 Inter-University Research PDF Responsible Representative: Ko-ichiro Sugiyama, Associate Professor, National Institute of Technology, Matsue College Contact Information: Ko-ichiro Sugiyama(sugiyama@gfd-dennou.org) Members: Hiroki Ando, Koichiro Sugiyama Abstract Our purpose is to support the observation performed by AKATSUKI (Venus Climate Orbiter) by developing a numerical fluid dynamics model (cloud resolving model) and providing a lot of numerical simulation data. The motion of Venus' cloud-level convection, distribution of H2SO4 solution・・・<<read more>>
JAXA Supercomputer System Annual Report April 2019-March 2020 Report Number: R19EACA12 Subject Category: JSS2 Inter-University Research PDF Responsible Representative: Keiichi Kitamura, Associate Professor, Yokohama National University Contact Information: Yuya Takagi(takagi-yuuya-ks@ynu.jp) Members: Keiichi Kitamura, Yuya Takagi Abstract In this study, we conducted CFD on the aerodynamics of the RV-X with a double-cone nose. In particular, we forcused on the side-force characteristics at high-angles of attack, and we performed large-scale calculations. The side-force characteristics betweeen wind tunnel testing and CFD at 60°・・・<<read more>>
JAXA Supercomputer System Annual Report April 2019-March 2020 Report Number: R19EA0716 Subject Category: Aeronautical Technology PDF Responsible Representative: Tatsuya Ishii, Aeronautical Technology Directorate, Propulsion Research Unit Contact Information: Shunji ENOMOTO(enomoto.shunji@jaxa.jp) Members: Shunji Enomoto, Tatsuya Ishii Abstract Ultra high bypass ratio aviation jet engines have a smaller sound absorbing liner area than conventional engines. In this project, we will develop sound-absorbing device technology that provides high noise reduction performance even with a small-sized sound-absorbing liner. Reference URL Please refer to '404・・・<<read more>>
JAXA Supercomputer System Annual Report April 2019-March 2020 Report Number: R19EA0603 Subject Category: Aeronautical Technology PDF Responsible Representative: Mitsuru Kurita, Assocaite senior researcher, Aeronautical Technology Directorate, Aviation Systems Research Unit Contact Information: Mitsuru Kurita(kurita.mitsuru@jaxa.jp) Members: Mitsuru Kurita, Fumitake Kuroda Abstract By developing a particular riblet pattern that is effective at reducing the turbulence frictional resistance, and by producing and applying an easy-to-coat method that can create an optimum riblet surface on the airframe, reduce friction drag in the turbulence boundary・・・<<read more>>
