2026-03-10T06:44:28Z https://jaxa.repo.nii.ac.jp/oai

oai:jaxa.repo.nii.ac.jp:00049149 2023-06-20T18:41:49Z 1398:1530:2254 1543:1874:2255 1887:1891 9:789:2223:2253

渦運動に対する圧縮性の影響解明のための安定性解析手法の開発 Development of Stability Analysis Method to Reveal Effect of Compressibility on Vortex Dynamics 谷口, 伸隆 鈴木, 宏二郎 TANIGUCHI, Nobutaka SUZUKI, Kojiro 第54回流体力学講演会/第40回航空宇宙数値シミュレーション技術シンポジウム (2022年6月29日-7月1日. いわて県民情報交流センター(アイーナ)), 盛岡市, 岩手 The 54th Fluid Dynamics Conference / the 40th Aerospace Numerical Simulation Symposium (June 29 - July 1, 2022. Iwate Citizen Information Exchange Center (Aiina)), Morioka, Iwate, Japan Vortex dynamics in compressible flow shows unique behavior including vortex suppression and shock wave generation. We developed stability analysis method in linear region and nonlinear region based on entropy generation to investigate compressibility effect on vortex dynamics. Kolmogorov flow and vortex collision problem were employed as the target flows and their long-term behavior was analyzed using a newly developed spectral method without artificial viscosity. Stability analysis for long-term behavior of the Kolmogorov flow showed unstable mode near shear layer accompanied by shock wave generation. On the other hand, that of the vortex collision problem showed that the contact of the colliding vortices was suppressed due to compressibility. 形態: カラー図版あり Physical characteristics: Original contains color illustrations 資料番号: AA2230023018 レポート番号: JAXA-SP-22-007 宇宙航空研究開発機構(JAXA) Japan Aerospace Exploration Agency (JAXA) 2023-02-17 jpn conference paper VoR https://jaxa.repo.nii.ac.jp/records/49149 2433-2232 宇宙航空研究開発機構特別資料: 第54回流体力学講演会/第40回航空宇宙数値シミュレーション技術シンポジウム論文集 JAXA Special Publication: Proceedings of the 54th Fluid Dynamics Conference / the 40th Aerospace Numerical Simulation Symposium JAXA-SP-22-007 237 246 https://jaxa.repo.nii.ac.jp/record/49149/files/AA2230023018.pdf application/pdf 5.6 MB 2023-02-17