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相互作用を受ける二次元円形渦対の運動における圧縮性の寄与に関する研究 The effect of compressibility on the motion of a pair of interacting two-dimensional circular vortices 谷口, 伸隆 鈴木, 宏二郎 TANIGUCHI, Nobutaka SUZUKI, Kojiro 流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2020オンライン (2020年9月28日-30日. 日本航空宇宙学会 : 宇宙航空研究開発機構(JAXA)オンライン会議) Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2020 Online (September 28-30, 2020. The Japan Society for Aeronautical and Space Sciences : Japan Aerospace Exploration Agency (JAXA), Online meeting) In this paper, the effect of compressibility on the motion of a pair of interacting vortices was investigated by numerical analysis and eigensystem analysis. The numerical calculation showed that both inviscid incompressible and inviscid compressible flows have similar vorticity evolution process. The eigenvalue analysis using Implicitly Restarted Arnoldi Method revealed the characteristic pattern of the density distribution in the case of colliding vortices. The stability condition for thermodynamically nonequilibrium state was applied to understand the behavior of colliding vortices in terms of entropy and eigenmodes. 形態: カラー図版あり Physical characteristics: Original contains color illustrations 資料番号: AA2030013024 レポート番号: JAXA-SP-20-008 宇宙航空研究開発機構(JAXA) Japan Aerospace Exploration Agency (JAXA) 2021-02-08 jpn conference paper VoR https://jaxa.repo.nii.ac.jp/records/47345 2433-2232 宇宙航空研究開発機構特別資料: 流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2020オンライン論文集 JAXA Special Publication: Proceedings of Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2020 Online JAXA-SP-20-008 181 189 https://jaxa.repo.nii.ac.jp/record/47345/files/AA2030013024.pdf application/pdf 4.3 MB 2021-02-08