In order to obtain the influence of the adjustment accuracy of variable stator vane on the aero-dynamic performance of multistage compressors,three rows of S1,R2 and S2 blades of an 11-stage high-pressure compressor were simulated in full 3D.The quantitative influence of the angle error of var-iable stator vane was analyzed by adjusting S1 stator angle.The results show that the higher the adjust-ment accuracy of variable stator vane is,the more the compressor matches the design condition and the better the aerodynamic performance is.When the angle accuracy of variable stator vane is±1°,it has little effect on compressor efficiency.However,when the angle accuracy of variable stator vane is closed at 3°,the maximum efficiency loss is 0.31%,and the flow separation of the pressure surface of the stator near the hub obviously increases.
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