Mechanism of perturbation-combined active control technique for asymmetric vortex flow over slender body at high angle of attack

作     者：WANG YanKui SHAN JiXiang TIAN Wei DENG XueYing DONG JinGang TIAN Xiao 

作者机构：Key Laboratory of Fluid Mechanics (Beihang University) Ministry of Education BUAA Beijing 100191 China 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2011年第54卷第10期

页      面：2665-2673页

核心收录：

学科分类：08[工学] 080103[工学-流体力学] 080104[工学-工程力学] 0825[工学-航空宇航科学与技术] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China (Grant No. 10872019) Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20101102110015),NCET-06-0176 

主　　题：asymmetric vortex perturbation-combined active flow control high angle of attack aerodynamics slender body 

摘      要：Based on the determinability of asymmetric vortices flow over slender body under changeless round grain at high angle of attack,the effect of microblowing set in special position on the behaviors of asymmetric flow is discussed in this paper,including blowing momentum and circumferential locations of the microblowing hole of 0.5 mm in diameter on nose tip.A new kind of active control technique,named perturbation-combined active control technique,which combines the micro-grain and micro-blowing perturbation,was proposed on the basis of the *** control technique can not only change the sign of side force of slender body arbitrarily through changing the vortices positions between yaw-left and yaw-right configuration,but also can make the magnitude of side force variable gradually even at bistable state of asymmetric ***,the interferential mechanism of the perturbation-combined active control technique has also been concluded from this *** tests have been conducted at low speed wind tunnel with subcritical Reynolds number of 1.05×10~5 at angle of attack α=50° in Beihang University,Beijing,China.