ZHANG Jing-xuan, LUO Ma, NIE Chao-qun, et al. Experimental study of the mechanism of improving stall margin of low speed axial-flow compressor with micro-injection under rotating inlet distortion[J]. 2010, 25(1).
ZHANG Jing-xuan, LUO Ma, NIE Chao-qun, et al. Experimental study of the mechanism of improving stall margin of low speed axial-flow compressor with micro-injection under rotating inlet distortion[J]. 2010, 25(1).DOI:
An experimental investigation was carried out in the paper to clarify the flow mechanism of how micro-injection improves the stall margin of a low speed axial-flow compressor under rotating inlet distortion.The results show that
in distorted sectors
the tip leakage flow is pushed forward to the leading edge;as the mass flow rate is decreased
tip leakage flow would spill out of the blade passage and trigger the rotating stall.Micro-injection can inhibit the formation of distortion disturbances and then delay the occurrence of rotating stall.