展向射流控制机翼前缘涡的机理及其应用

旋涡和流动分离的控制一直是空气动力学研究的一个重要。研究表明展向吹气是控制机翼上旋裂和流动分离的一种十分有效的气动措施。

An Experimental Study on Controlling Vortex Over Wing by Using Spanwise Blowing

Vortex and flow separation control has been one of the important subjects in the field of aerodynamics.Investigations showed that spanwise blowing is a very effective measure for controlling breakdown of leading edge vortex over the wing and improving the aerodynamic characteristics at high angle of attack.A summary on investigations conducted by authors,including the exploratory study of mechanism of interaction between spanwise blowing and the vortex by using flow visulization and LDV technique,investigations on various blowing configuration and factors affecting benifit due to the spanwise blowing,controlling the position of the vortex to improve drag reduction effectiveness of vortex flap and pulse spanwise blowing to save compressed air supply and improve blowing effectiveness,is presented in the paper.