By analyzing the low-speed single-stage compressor

six different bleeding plans were presented according to their influence mechanism on the compressor performance.A numerical simulation was conducted to study the influence of bleeding on the compressors total pressure rise and stability margin.The results show that

for the stators with large flow separation in the corner

it is better to bleed air both from the suction surface of the casing and the blade suction surface near the hub simultaneously

so as to improve total pressure rise and stability margin with a small amount of bleed air.The conclusion steadily supports a concept that it is very necessary to combine air system bleeding with the compressor flow control during engine performance study.