Volume 29 Issue 11
Nov.  2014
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CHEN Mei-ning, XIE Wei-liang, WANG Hong-tao. Numerical investigation of stator cavity leakage influence to a compressor performance[J]. Journal of Aerospace Power, 2014, 29(11): 2543-2549. doi: 10.13224/j.cnki.jasp.2014.11.003
Citation: CHEN Mei-ning, XIE Wei-liang, WANG Hong-tao. Numerical investigation of stator cavity leakage influence to a compressor performance[J]. Journal of Aerospace Power, 2014, 29(11): 2543-2549. doi: 10.13224/j.cnki.jasp.2014.11.003

Numerical investigation of stator cavity leakage influence to a compressor performance

doi: 10.13224/j.cnki.jasp.2014.11.003
  • Received Date: 2013-07-07
  • Publish Date: 2014-11-28
  • Three-dimensional numerical simulations were carried out for a compressor to investigate the stator cavities' influence to the performance and flow field. Detailed analyses of the performance and flow field came to some conclusions: the cavity leakage flow led to decreases in the efficiency, pressure ratio and stall margin of the compressor. The compressor stall margin declines by 5.19% due to the cavity leakage flow. The cavity leakage flow mainly influences the root flow of the stator and rear blades, and changes the compressor stall mechanism. The cavity leakage flow causes flow separation near the hub of the first stator, as a result the second rotor incidence angle increase sharply; consequently the flow separates at the suction side of the second rotor, causing the compressor stall earlier than that without the cavity.

     

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