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zhen dong yi xing he jin yi de rao liu te xing yan jiu
Author(s): 
Pages: 1-7
Year: Issue:  1
Journal: Chinese Journal of Theoretical and Applied Mechanics

Keyword:  非定常流激波分离数值模拟;
Abstract: 用数值模拟手段详细地研究了振动翼型和襟翼的绕流问题,数值模拟的出发方程为Euler和N-S方程,格式为Bcam-Warming格式的改进型。数值实验主要针对流场的二大特性进行的,即振动对激波的影响和振动对分离的抑制作用,结果表明:(1)随翼型或襟翼的振动激波强度和位置也相应地变化但这一变化滞后于攻角的变化;(2)振幅加大激波强度的变化和激波运动范围也加大;(3)振动频率越高对激波的影响反而较低频时要小;(4)流动条件的不同可使升力回线的走向发生变化;(5)振动对分离有明显的抑制作用。
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