Investigation of the Effect of Outlet Measurement Probe Position on Axial Compressor Aerodynamic Performance Test
In order to investigate the influence of the outlet measurement probe layout such as the num-ber and the axial position on the compressor aerodynamic performance test,the unsteady numerical analy-sis of a full annulus three-stage axial compressor including the probes was carried out.The results show that the outlet measurement probe will change the upstream flow field structure and form the local high to-tal pressure zone and flow angle deviation region at the inlet and outlet sections of the last stage vane in circumferential direction,which cover 3 to 4 cascade channels;with the increase of the axial distance be-tween the probe and the last stage vane,the strength of the high total pressure zone decreases,but the in-fluence range increases;increasing the number of outlet probe does not improve the accuracy of compres-sor test performance evaluation obviously,the pressure ratio is still 0.6％higher and the efficiency abso-lute value is 1.8％higher than the performance of a compressor without probes;in order to reduce the compressor performance test error based on the probe measurement points in the axial compressor test,not only the influence of the probe on the flow field on measurement plane should be considered,but also a reasonable layout of the probe should be carried out according to the non-uniformity of the flow field on the measurement plane.
万方数据
维普
