Volume 37 Issue 4
Apr.  2022
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LI Ziliang, HAN Ge, ZHU Junqiang, LU Xingen. Mechanism of swept controlling internal flow of transonic centrifugal compressor[J]. Journal of Aerospace Power, 2022, 37(4): 826-835. doi: 10.13224/j.cnki.jasp.20210228
Citation: LI Ziliang, HAN Ge, ZHU Junqiang, LU Xingen. Mechanism of swept controlling internal flow of transonic centrifugal compressor[J]. Journal of Aerospace Power, 2022, 37(4): 826-835. doi: 10.13224/j.cnki.jasp.20210228

Mechanism of swept controlling internal flow of transonic centrifugal compressor

doi: 10.13224/j.cnki.jasp.20210228
  • Received Date: 2021-05-10
  • Publish Date: 2022-04-28
  • Transonic centrifugal compressors face the problem of shock wave controlling.Therefore,the knowledge of the flow mechanism under leading edge swept effect plays an important role in improving the transonic centrifugal compressors performance.Two different transonic centrifugal compressors were investigated by numerical simulations after verified.The results show that,the inducer inlet shock position directly determines the effect of the leading edge swept under the design point.The change of leading edge swept can affect the flow-through capacity by changing the load distribution on the tip of inducer,and furthermore change the shock structure and flow loss on the tip of the inducer.For the impellers whose passage shock wave was swallowed in the blade passages,the backward swept weakened the strength of the passage shock wave and thus reduced the loss near the blade tip of the inducer.However,for the impellers whose leading edge shock wave was detached from leading edge,the forward swept weakened the strength of the leading edge shock wave and made the shock wave more attached,thus reducing the loss near the tip of inducers.

     

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