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工程力学  2014 

翼型绕流分离的微楔控制

, PP. 217-222

Keywords: 流体分离,翼型绕流,流动控制,涡流发生器,微型三角楔

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Abstract:

基于大涡模拟(LES,LargeEddySimulation),结合3阶WENO(WeightedEssentiallyNon-Oscillatory)格式与沉浸边界法(IBM,ImmersedBoundaryMethod),对NACA0012翼型在来流马赫数为Ma=0.5以及10°攻角下,有无微型三角楔涡流发生器作用的三维绕流进行了数值模拟,对比了两者的流场结构变化。数值结果表明,微楔能显著改变翼型绕流的尾涡结构,并能缩小其表面边界层的分离,提高升力,并对微型三角楔涡流发生器的流体分离抑制机理进行了讨论。

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