旋涡发生器对叶片根部马蹄涡的影响

针对简化了的叶片-平板结构,在叶片上游平板上的某位置布置旋涡发生器影响马蹄涡.数值模拟了不同高度旋涡发生器作用下的角区湍流流动.结果表明:任何一种旋涡发生器都能不同程度地削弱马蹄涡系,高度为2mm的旋涡发生器能使这种削弱作用达到最大;另外,随着高度的增加,叶片两侧的涡腿有向叶片聚拢的趋势.提出的方法无需额外消耗能量,为一种被动的控制手段,有很大的实际应用前景.布置旋涡发生器的控制方法简单实用,工程中采用该法是不错的一种选择. 

Effects of vortex generator application on the wing-body juncture horseshoe vortex

A typical wing-body junction region was presented.In order to modify the horseshoe vortex,the vortex generator was placed upstream of the wing on the flat plate.Numerical simulation was conducted to investigate the effects of the vortex generator's heights on the turbulent junction flow.The results show that any vortex generator can weak the horseshoe vortex.The modification is best with 2mm of the vortex generator's height.The vortex legs congregate round the wing with the increasing of the heights.The proposed method is a kind of passive control method.The modification of junction flows with vortex generator application presented is promising since it is very simple and applicable.