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

機関リポジトリ

書誌事項

タイトル別名
  • Development of Stability Analysis Method to Reveal Effect of Compressibility on Vortex Dynamics

説明

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

収録刊行物

詳細情報 詳細情報について

問題の指摘

ページトップへ