LESによる2次元翼周りの高精度シミュレーションについて
| Autor: | Kurotaki, Takuji, Sumi, Takahiro, Hiyama, Jun |
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| Jazyk: | japonština |
| Rok vydání: | 2006 |
| Předmět: |
ラージエディシミュレーション
turbulent flow 境界層遷移 large eddy simulation separated bubble 計算流体力学 computational fluid dynamics two dimensional airfoil Navier-Stokes equation Reynolds number Physics::Fluid Dynamics 剥離泡 laminar flow 2次元翼 層流 乱流 ナビエ・ストークス方程式 NACA 0012 transition position NACA0012 渦度 レイノルズ数 boundary layer transition 遷移位置 vorticity |
| Zdroj: | 宇宙航空研究開発機構特別資料: 航空宇宙数値シミュレーション技術シンポジウム2006論文集 = JAXA Special Publication: Proceedings of Aerospace Numerical Simulation Symposium 2006. :119-124 |
| ISSN: | 1349-113X |
| Popis: | An advanced Large Eddy Simulation (LES) technique with high accuracy and resolution is proposed. This method solves compressible 3-D Navier-Stokes equations with the Approximated Deconvolution Method approach as LES approach and has several sophisticated techniques such as highly tuned compact schemes, the generalized characteristic interface conditions, and the generalized Navier-Stokes boundary conditions. Several applications to flows around 2-D NACA0012 aerofoil are presented and discussed. Numerical results show that this method can solve very complicated subsonic flow including the laminar flow separation at the leading edge region, the transition in the bubble and the reattachment. It also has capability to capture the natural laminar to turbulent transition phenomena in the order of Reynolds number of 10(exp 6). In order to validate the present LES technique in more detail, the results are compared with existing wind-tunnel experiments and linear stability analyses with the e(sup N) method and discussed. 資料番号: AA0063154022 レポート番号: JAXA-SP-06-010 |
| Databáze: | OpenAIRE |
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