Research Progress of Tip Winglet Technology in Compressor

In the present study, the research progress of tip winglets that control tip clearance leakage flow in compressors is reviewed. Firstly, the effects of tip leakage flow on the aerodynamic performance of the compressor are presented. Subsequently, the development of tip winglet technology is reviewed. Next, a series of studies on compressor tip winglet technology are conducted. Besides, the effects of tip winglets on the aerodynamic performance of rectangular cascades of low-speed and high-subsonic compressors, subsonic compressor rotor and transonic compressor rotor are discussed, respectively, and the control effect of tip winglet technology combined with tip groove design on tip leakage is investigated. Lastly, the subsequent development direction and research prospect of compressor tip winglet technology are presented.