Prediction Analysis of First Stall Stage of Multistage Axial Flow Compressor with Circumferential Total Pressure Distortion

Based on the miltistage axial flow compressor characteristics,a method was developed for predicting first stall stage of multistage axial flow compressors with circumferential total pressure distortion.By parallel compressor model and stage-stacking method,prediction of first stall stage for multistage axial compressure was made with a stage maximum relative air-flow on the condition that effective relative air-flow angle of the stage for multistage axial flow compressors with circumferential pressure distortion was equal to the angle without distortion.The first stall stage of J85-13 engine eight stage axial flow compressor with distortion was predicted with the numerical simulation of its total pressure distortion test data.