Effects of Non-Axisymmetric Stator on Aerodynamic Performance of Compressor
In order to reduce the influence of inlet distortion on compressor aerodynamic performance,a non-axisymmetric stator is designed and investigated by numerical simulation.The results show that at the peak efficiency con-dition,non-axisymmetric stator can improve the flow capacity of the passage by means of weakening the corner separa-tion of the vanes and narrowing the low density flow area in distortion zone,which lead to a 0.46%increase in peak effi-ciency of the compressor.Besides,the inlet swirl angle of vanes in distortion zone get optimized with a 2.5°reduction on the peak.At the near stall conditions,the high diffuser factor and separation range on upper half of the vanes in the distor-tion zone are reduced,which result in slight deterioration of the flow field near the hub,but the overall aerodynamic per-formance and flow capacity are still improved.The adaption of non-axisymmetric stator can make the compressor suffer lower flow rate and increase the stability margin by 31.5%.
万方数据
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