The Impact of Bleeding Slot Angles on the Performance of a Compressor

Several stages of a multi-stage axial compressor have been investigated to study the impact of interstage bleeding on compressor total performance and local flow field. Three different angles of bleeding slot (30°, 45°, 60°) were presented to make the numerical simulation of the flow field. As the result shows, the slot has a significant effect on the performance of the compressor. At a slot angle of 45°, the main flow loss is low and the efficiency is the highest. At an angle of 60°, the efficiency drops, the main flow loss is excessive and there is a large separation.