翼型声激励增升机理研究

Investigation on the Mechanism of Enhancing Lift of Acoustic Excitation of Two-Dimensional Airfoil

本文提供了翼型内部声激励增升效果的实验研究结果，并着重探讨了声激励增升的机理。实验结果表明在分离点前或分离点后位置作激励都有很好的增升效果，且机理在本质上是一样的。本文所描述的关于声激励增升机理的初步结论。

This paper presents the results of the experimental investigation on the effects of internal acoustic excitation of two-dimensional airfoil on enhancing lift and specially discusses the mechanism of enhancing lift. The experimental results show that significant lift enhancement by acoustic excitation is all obtained by exciting at the location in front of separation point or behind separation point and the mechanism of enhancing lift of them is essentially the same. The elementary conclusions on the mechanism of enhancing lift provide beneficial enlightenment for the abvanced work.