Numerical investigation on effects of bleeding on compressor model

In order to study the impact of bleeding on compressor performance, this paper sets up a simplified mathematical and physical model, and uses numerical simulation to explore parameters of bleeding rate, bleeding area, the angle and length of bleeding structure in 49 cases. Studies show that due to the effects of the bleeding, the mainstream flow accelerates in the upstream of the bleeding groove, and decelerates in the downstream. There is a certain pattern in the impact of bleeding parameters on mainstream thermal performance. Bleeding rate mainly determines how much the thermodynamic parameters change, and bleeding area mainly affects where the thermodynamic parameters change, while the angle and length of the bleeding structure influence how the internal bleed air flows.