| Citation: | ZHOU Qian, LI Xiangjun, YOU Fuhao, et al. Application of endwall-suction surface integrated contouring in a compressor stage[J]. Journal of Aerospace Power, 2025, 40（9）：20230524 doi: 10.13224/j.cnki.jasp.20230524
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In order to solve the problem of end-wall corner separation in high-load axial compressors, a combined contouring method of suction surface and end-wall with multiple local control channels for secondary flow applicable to multiple working conditions was applied to the final stage static sub of a 2.5-stage compressor, and the effects of the contouring method in terms of efficiency enhancement or loss control in the face of complex flow conditions of the pressurized gas environment were explored. A single-objective optimization of the highest efficiency point resulted in an improvement of about 0.3% in the final stage peak efficiency of the compressor. The flow field analysis showed that when the integrated end wall-suction surface contouring design was applied in a multi-stage compressor environment, the contouring was located in the static sub, but the rotor flux and even the efficiency were also subjected to a certain degree of interstage interference. Due to different flow structures in the end zone of the prototype compressor, the optimal modeling flow control mechanism differed from the conclusions obtained in the previous vane grid study. In this way, the feasibility of the integrated end-wall-suction surface contouring method adopted to the control of various flow structures can be proved to a certain extent, and its application in the compressor environment has been verified.
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