展向射流控制机翼前缘涡的机理及其应用  

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

作　　者：秦燕华[1] 庄逢甘[1] 沈礼敏[2] 

机构地区：[1]北京航空航天大学流体力学研究所 [2]中国空气动力研究与发展中心

出　　处：《空气动力学学报》1998年第3期267-275,共9页Acta Aerodynamica Sinica

摘　　要：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课题。研究表明展向吹气是控制机翼上旋涡破裂和流动分离的一种十分有效的气动措施。本文综述了在这一领域内的主要研究成果，包括利用流动显示和ＬＤＶ技术探索展向吹气与机翼前缘涡干扰的机理，各种吹气方案和影响因素对气动特性的影响，利用展向吹气控制前缘涡位置改善涡襟翼效率的研究以及脉冲吹气提高吹气效率等方面的研究。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.

关 键 词：旋涡控制 展向射流 机翼 流动分离 旋涡结构 

分 类 号：V211.41[航空宇航科学与技术—航空宇航推进理论与工程]