| 研究課題/領域番号 |
22KF0421
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| 補助金の研究課題番号 |
22F22059 (2022)
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| 研究種目 |
特別研究員奨励費
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| 配分区分 | 基金 (2023)
補助金 (2022) |
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| 応募区分 | 外国 |
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| 審査区分 |
小区分24010:航空宇宙工学関連
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| 研究機関 | 国立研究開発法人宇宙航空研究開発機構 |
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研究代表者 |
橋本 敦 国立研究開発法人宇宙航空研究開発機構, 航空技術部門, 主幹研究開発員 (30462899)
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| 研究分担者 |
LUSHER DAVID 国立研究開発法人宇宙航空研究開発機構, 航空技術部門, 外国人特別研究員
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| 研究期間 (年度) |
2023-03-08 – 2024-03-31
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| 研究課題ステータス |
交付 (2023年度)
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| 配分額 *注記 |
2,200千円 (直接経費: 2,200千円)
2023年度: 500千円 (直接経費: 500千円)
2022年度: 1,100千円 (直接経費: 1,100千円)
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| キーワード | CFD / Numerical Simulation / Code-generation / Compressible Flow / Aerospace / Supercomputer |
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| 研究開始時の研究の概要 |
In this project, we perform large-scale CFD simulations of transonic airfoil buffet on exa-scale supercomputers. Our aim is to understand the 3D mechanisms that govern the buffet aerodynamic instability for transonic flight. We extend the OpenSBLI CFD solver to investigate the 3D buffet phenomena.
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| 研究実績の概要 |
During FY2022, Dr Lusher has published 1 journal paper [1] and 2 international and 1 domestic conference papers [2,3,4]. A poster presentation was also made at SuperComputing22 conference, USA. Oral presentations were made at both domestic and international conferences. Dr. Lusher was awarded a Junior Researcher computational grant for 153.6 Million Core Hours on the Fugaku supercomputer at RIKEN. A research visit was made to NASA Langley Research Center, USA, in January 2023, for collaborative research and to present a seminar. The OpenSBLI code has been extended to be able to simulate high-fidelity simulations of transonic airfoil buffet. The code has been validated against data in the literature [2], and its performance has been tuned on both JAXA’S JSS3 supercomputer and Fugaku.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
The objectives of the early stages of the project have been met and large-scale simulations are underway that will extend the current status in the literature. The OpenSBLI code has been developed to include multi-block capability, improved shock-capturing, filters, and improved post-processing. Preliminary results were presented at international aerospace conferences. Grant applications were awarded on the Fugaku supercomputer, and the code performance has been tuned. High-fidelity investigations are being performed on the NASA CRM infinite wing geometry at transonic conditions on up to 10 billion grid points, which exceeds what is present in the literature. The international collaboration with NASA on compressible wall-bounded turbulence has resulted in a journal publication [1].
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| 今後の研究の推進方策 |
Wide-span airfoil simulations are ongoing, exploring the parametric space to investigate 3D effects of the turbulent transonic buffet instability and will lead to journal publications. The literature is limited to narrow airfoils which can only describe 2D effects. Abstracts have been accepted for presentation at the ISSW34 shockwave symposium in South Korea and ANSS conference in Tokyo. Dr. Lusher has been invited to teach a workshop on OpenSBLI in the UK. A new OpenSBLI software release will be made public during the JSPS project with accompanying journal publication.
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