三角翼DBD等离子体流动控制研究进展

现代战机采用较多的三角翼，在大迎角绕流时存在前缘涡破裂等气动问题。作为新型主动流动控制技术，等离子体激励频带宽、响应快、结构简单、便于闭环控制，在解决三角翼气动问题上具有潜力。回顾了介质阻挡放电（DBD）等离子体气动激励的基本原理，及其用于三角翼前缘涡控制的研究进展。从来流条件、几何构型、激励参数等方面分析了DBD等离子体激励对流动控制效果的影响规律；结合不同激励频率下流场演化特性，分析了流动控制机理。最后，从理论研究和工程应用的角度，对三角翼前缘涡控制的发展进行总结展望。

A review of vortical flow control over delta wings using DBD plasma actuation

Delta wings, being widely used in modern fighters, face aerodynamic problems such as vortex breakdown at large angles of attack. As a new type of active flow control technique, plasma aerodynamic actuation shows significant potential in the control of vortex flows of delta wings because of its fast response, simple structure, wide frequency band and convenience for closed loop control. In this paper, the principles of Dielectric Barrier Discharge (DBD) plasma aerodynamic actuation and its applications in the control of leading-edge vortices over delta wings are reviewed. The effect of DBD plasma actuation on flow control is analyzed in terms of the incoming flow condition, the geometry of experimental model and actuation parameters. Combining with the evolution characteristics of flow field at different actuation frequencies, the mechanism of flow control is analyzed. Finally, the future theoretical research and engineering application of delta wing vortex control are expounded.