空气动力学学报2012，Vol.30Issue(4)：477-482,6.
二元翼型大迎角绕流的平衡态(解)的数值研究
Numberical simulation of separation equilibrium of flow around 2D wing configuration at high angle of attack
祝明红 1叶正寅 2金玲3
作者信息
- 1. 中国空气动力研究与发展中心空气动力学国家重点实验室,四川绵阳621000
- 2. 中国空气动力研究与发展中心,四川绵阳621000
- 3. 西北工业大学航空学院,陕西西安710072
- 折叠
摘要
Abstract
The Reynolds-Averaged Navier-Stokes (RANS) method is conducted to simulate flow around airfoil at high AOA. The separation is well captured using two-equation shear stress transport (SST/k-?) turbulence model accounting for turbulence motions. Calculation shows that the wing separation vortices are stable in several equilibrium stats, with the wing thickness up to a certain criteria, and AOA in a certain range. Meanwhile the separation transfers from one stable state to anther when certain disturbance is intruded. Comparing different disturbances, the translation is inclined to happen under heaving-pitching motions rather than forward-afterward vibrations. That is the exact one of most important reasons for aerodynamic loads data variation of airfoil at high AOA in wind tunnel test.关键词
分离流/稳定性/重复性Key words
separated flow/stability repeatability分类
航空航天引用本文复制引用
祝明红,叶正寅,金玲..二元翼型大迎角绕流的平衡态(解)的数值研究[J].空气动力学学报,2012,30(4):477-482,6.
