环量控制翼型气动力迟滞效应研究  

Research on aerodynamic hysteresis effect of airfoil with circulation control

作　　者：雷玉昌 张艳华[2] 卢昂 张登成[2] 苏光旭 LEI Yuchang;ZHANG Yanhua;LU Ang;ZHANG Dengcheng;SU Guangxu(95034 Troops of the PLA,Baise 533600,China;Aeronautics Engineering College,AFEU,Xi’an 710038,China)

机构地区：[1]中国人民解放军95034部队,广西百色533600 [2]空军工程大学航空工程学院,陕西西安710038

出　　处：《飞行力学》2021年第2期16-21,共6页Flight Dynamics

摘　　要：为研究环量控制翼型在非定常运动中的气动力迟滞效应,通过求解环量控制翼型的强迫俯仰振动数值模拟数据,研究了不同减缩频率、振幅和射流动量系数对环量控制翼型气动特性的影响规律,分析了不同动量系数对非定常流场变化的作用机理。研究结果表明:减缩频率和迎角振幅越大,气动力迟滞效应越明显;小迎角下动量系数越大,迟滞效应越微弱,而大迎角下动量系数越大,迟滞效应越明显,并表现出提前动态失速的特征;气动力迟滞效应主要受翼型上表面压力分布影响,与后缘涡和上表面分离涡关系密切。所得结论对于环量控制技术在无人飞行器控制和操纵方面的应用具有一定的实际意义。In order to study the aerodynamic hysteresis effect of circulation control airfoils in unsteady motion, based on the numerical simulation data of forced pitching vibration of airfoils, the effects of different reduction frequencies, amplitudes and momentum coefficients on the aerodynamic characteristics and flow field mechanism of circulation control airfoils are studied. The results show that the larger the reduction frequency and amplitude of AOA are, the more obvious the aerodynamic hysteresis effect is. At low angle of attack, the larger the momentum coefficient is, the weaker the hysteresis effect is. At high angle of attack, the larger the momentum coefficient is, the more obvious the hysteresis effect is, and it shows the characteristic of dynamic stall in advance. The aerodynamic hysteresis effect is mainly affected by the pressure distribution on the upper surface of the airfoil, and is closely related to the trailing edge vortex and the upper surface separation vortex. Conclusions are of great significance for guiding the application of the circulation control technology in the control and operation of UAVs.

关 键 词：环量控制 气动力迟滞 翼型 数值模拟 

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]