吸力面合成射流对某亚音速轴流压气机转子性能的影响

To investigate the effect of suction surface synthetic jet on the aerodynamic Performance of a subsonic axial flow compressor, a numerical Simulation was conducted on a high-speed and subsonic axial flow compressor rotor. Results show that after being excited by the synthetic jet, the flow margin of the compressor decreases by 1.3%, but the peak efficiency increases by 0. 47%. After analyzing the internal flow field, it is found that tip leakage Separation loss and passage loss are the main sources of the compressor loss. The arrangement of synthetic jet excitation on the suction surface of the rotor blade can effective-ly reduce the tip leakage, Separation loss, passage loss and especially the outlet loss. Moreover, the suction effect of the synthetic jet is more beneficial to reduce the compressor loss than the blowing effect. At the same time, it should also be noted that after being excited, the radial velocity of the flow in the compressor channel increases and gathers towards the tip of the blade, resulting in more serious tip blockage than the prototype compressor, and leading to a slight decrease in the stability margin.