03.3 - Basic Fluid Dynamics and Flow Control
MECHANISM STUDY ON THE IMPACT OF PULSED JET AT THE BLADE TIP LEADING EDGE ON THE FLOW FIELD IN COMPRESSOR
Y. Yang, Civil Aviation Flight University of China, China; H. Zhang¹, W. Lu, Nanjing Tech University, China; C. Zhang¹, C. Xu¹, G. Huang¹; ¹Nanjing University of Aeronautics and Astronautics, China
A pulsed jet hole is introduced at leading edge on the casing wall of a simplified model of compressor rotor cascade and LES is conducted. The mechanism of periodic flow control is found to resonate with the tip gap vortex, leading to more organized vortices that wrap around the primary leakage vortex with smaller pitch and radius, thereby reducing the affected area and delaying vortex breakdown.