Preliminary Design and Flow Analysis of a Four-stage Low-reaction Compressor
In this paper,two design concepts of single-stage low-reaction compressor are applied to multi-stage low-reaction compressor,and a four-stage highly loaded low-reaction compressor is preliminarily designed.The parameters of each stage of the four-stage low-reaction compressor are pre-determined in one-dimensional design.Three-dimensional numerical simulations are used to evaluate the one-dimensional design results.The overall performance of the four-stage low-reaction compressor in the three-dimensional numerical simulation results are estimated,and internal flow field is analyzed.The results show that the total pressure ratio of the four-stage compressor can exceed 6,the efficiency near the design point is not less than 88％,and the separation in the outlet vane is also within a controllable range.
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