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 effectively 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.
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references
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