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Research on rotor blade optimization between JAXA-ONERA-DLR : Validation of CFD solvers

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JAXA Supercomputer System Annual Report April 2020-March 2021 Report Number: R20ECMP11 Subject Category: Competitive Funding PDF Responsible Representative: Yasutada Tanabe, Aeronautical Technology Directorate, Aviation Systems Research Unit Contact Information: Keita Kimura(kimura.keita@jaxa.jp) Members: Yasutada Tanabe, Masahiko Sugiura, Hideaki Sugawara, Kuniyuki Takekawa, Keita Kimura Abstract In order to verify and accumulate knowledge of the analysis tools and optimization methods of helicopter blades possessed by JAXA, DLR, and ONERA, each organization has been optimizing blade shapes under various flight conditions. In this fiscal・・・<<read more>>

JAXA-SUBARU Cooperative Research

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JAXA Supercomputer System Annual Report April 2020-March 2021 Report Number: R20ECMP10 Subject Category: Competitive Funding PDF Responsible Representative: Yoshikazu Makino, Aeronautical Technology Directorate, Aviation Systems Research Unit Contact Information: Yasutada Tanabe(tan@chofu.jaxa.jp) Members: Yasutada Tanabe, Hideaki Sugawara, Masahiko Sugiura, Kuniyuki Takekawa, Masafumi Sasaki, Keita Kimura Abstract A compound helicopter is one of the high-speed rotorcraft concepts. Aerodynamic interactions occur on the winged compound helicopter, constructed by a single main rotor, winged-body, and multiple propellers. The drag of the rotorcraft drastically increases・・・<<read more>>

SGS Stress Transport Equation-based SGS Modeling for Comprehensive LES Model

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JAXA Supercomputer System Annual Report April 2020-March 2021 Report Number: R20ECMP08 Subject Category: Competitive Funding PDF Responsible Representative: Shingo Matsuyama, Aeronautical Technology Directorate, Numerical Simulation Research Unit Contact Information: Shingo Matsuyama(smatsu@chofu.jaxa.jp) Members: Shingo Matsuyama Abstract In this study, we aim to realize a comprehensive LES that does not require any tuning for model parameters to the target flow field by solving the SGS stress transport equations. The SGS stress equations are derived exactly from the spatial filtering operation, but requires・・・<<read more>>

En-Core Project / Turbine internal cooling analysis

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JAXA Supercomputer System Annual Report April 2020-March 2021 Report Number: R20EBA30312 Subject Category: Aeronautical Technology PDF Responsible Representative: Takashi Yamane, Aeronautical Technology Directorate, En-Core (environmentally compatible core engine technology research) project Contact Information: Junichi Kazawa, Aeronautical Technology Directorate, En-Core (environmentally compatible core engine technology research) project(kazawa.junichi@jaxa.jp) Members: Junichi Kazawa, Susumu Kato, Yoji Okita Abstract We will contribute to strengthening international competitiveness by demonstrating technologies for high-temperature, high-efficiency turbines and ultra-low NOx lean burn combustors that reduce nitrogen oxide (NOx) and・・・<<read more>>

Research on the performance improvement of practical aero-engine fuel injector

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JAXA Supercomputer System Annual Report April 2020-March 2021 Report Number: R20EBA30200 Subject Category: Aeronautical Technology PDF Responsible Representative: Takashi Yamane, Aeronautical Technology Directorate, En-Core Pre-project team Contact Information: Kazuaki Matsuura, Japan Aerospace Exploration Agency, Aeronautical Technology Directorate, En-Core Project team(matsuura.kazuaki@jaxa.jp) Members: Kazuaki Matsuura, Mitsumasa Makida, Naoki Nakamura, Jun Iino, Huilai Zhang, Kinya Saito, Kunihiko Sakata, Harumi Toriyama, Takahiro Inagawa, Aya Yoshida Abstract Our study is focusing on the improvement of fuel injector performance. Numerical simulations on air-flow, atomization, fuel/air mixing,・・・<<read more>>