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High Resolution N-body Simulation of Planet Accretion: Effect of Fragmentation onto Planetesimal Accretion

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JAXA Supercomputer System Annual Report April 2017-March 2018 Report Number: R17EACA27 Subject Category: JSS2 Inter-University Research PDF Responsible Representative: Junko Kominami, Tokyo Institute of Technology Contact Information: Junko Kominami kominami@mail.jmlab.jp Members: Junko Kominami Abstract When the Sun was formed, protoplanatary disk was formed. It is widely accepted that planets are formed through the coagulation of dust component in the protoplanetary disk. However, the Jovian planets and icy planets were formed can not be explained using classical planet formation. For example,・・・<<read more>>

Environment Conscious Aircraft Systems Research in Eco-wing Technology:Airframe-Engine Noise Reduction Technology

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JAXA Supercomputer System Annual Report April 2017-March 2018 Report Number: R17EA0602 Subject Category: Aeronautical Technology PDF Responsible Representative: Yoshikazu Makino, Aeronautical Technology Directorate Next Generation Aeronautical Innovation Hub Center Contact Information: Dongyoun Kwak kwak.dongyoun@jaxa.jp Members: Takehisa Takaishi, Mitsuhiro Murayama, Yasushi Ito, Ryotaro Sakai, Tohru Hirai, Kentaro Tanaka, Kazuhisa Amemiya, Gen Nakano, Tomoaki Ikeda, Fumitake Kuroda, Keisuke Ohira, Dongyoun Kwak, Yosuke Matsumura, Seiichiro Morizawa, Ryutaro Furuya Abstract Innovative drag reduction technologies are investigated to reduce the fuel consumption for a conventional・・・<<read more>>

FINE (Flight Investigation of skiN-friction reducing Eco-coating)

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JAXA Supercomputer System Annual Report April 2017-March 2018 Report Number: R17EA0603 Subject Category: Aeronautical Technology PDF Responsible Representative: Yoshikazu Makino, Aeronautical Technology Directorate, Aviation Systems Research Unit Contact Information: Mitsuru Kurita kurita@chofu.jaxa.jp Members: Fumitake Kuroda, Mitsuru Kurita Abstract This study develops a more effective riblet pattern to reduce the skin friction in the turbulent boundary layer by using DNS. The optimized riblet pattern by the DNS is painted on a experiment airplane, the effects of the reducing skin friction is・・・<<read more>>

Development of Robust Numerical Scheme for Kerosene Turbulent Combustion

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JAXA Supercomputer System Annual Report April 2017-March 2018 Report Number: R17EA1921 Subject Category: Aeronautical Technology PDF Responsible Representative: Takashi Aoyama, Aeronautical Technology Directorate, Numerical Simulation Research Unit Contact Information: Shingo Matsuyama smatsu@chofu.jaxa.jp Members: Shingo Matsuyama Abstract When carrying out a combustion simulation using a detailed reaction mechanism for a hydrocarbon fuel, the number of chemical species to be considered and the stiffness due to a chemical reaction become problems. In this study, by combining skeletal reaction mechanism and dynamic stiffness・・・<<read more>>

Environment Conscious Aircraft Systems Research in Eco-wing Technology: Collaborative Research on Future Aircraft Conceptural Design

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JAXA Supercomputer System Annual Report April 2017-March 2018 Report Number: R17EA0622 Subject Category: Aeronautical Technology PDF Responsible Representative: Yoshikazu Makino, Aeronautical Technology Directorate, Next Generation Aeronautical Innovation Hub Center Contact Information: Seiichiro Morizawa morizawa@mech.tottori-u.ac.jp Members: Seiichiro Morizawa Abstract The discussion on the planforms of forward-swept wings for the furture aircraft design was conducted with CFD. For this purpose, a parametric study of the planforms was conducted, and the influecnes of the design parameters on the aerodynamic characteristics and the flow・・・<<read more>>