Volume 32 Issue 10
Oct.  2017
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Compressor model and modal control based on unsteady air injection[J]. Journal of Aerospace Power, 2017, 32(10): 2509-2515. doi: 10.13224/j.cnki.jasp.2017.10.025
Citation: Compressor model and modal control based on unsteady air injection[J]. Journal of Aerospace Power, 2017, 32(10): 2509-2515. doi: 10.13224/j.cnki.jasp.2017.10.025

Compressor model and modal control based on unsteady air injection

doi: 10.13224/j.cnki.jasp.2017.10.025
  • Received Date: 2016-02-28
  • Publish Date: 2017-10-28
  • Based on the multidimensional compressor model with steady air injection, and in consideration of the mass and momentum effects and the unsteady influence introduced by the unsteady flow, the multidimensional compressor model with unsteady air injection was established. The principle of compressor modal control was analyzed, and modal control law using unsteady air injection was derived. Taking an axial compressor as example, modal control with different modes were simulated under stall condition. It indicates that using unsteady air injection, the same effect is achieved with only 57%-80% injected mass flow compared with steady and continual air injection, the extended stability range reaches 2.34% with the first four mode control, and also the stability range extends with the increment of mode number controlled.

     

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