Volume 39 Issue 8
Aug.  2024
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SHEN Wenjie, WANG Suofang, ZHANG Xindan. Research on the vortex breakdown and pressure loss characteristics in the cavity with anti-swirling waist circular drum hole[J]. Journal of Aerospace Power, 2024, 39（8）：20220075 doi: 10.13224/j.cnki.jasp.20220075
Citation: SHEN Wenjie, WANG Suofang, ZHANG Xindan. Research on the vortex breakdown and pressure loss characteristics in the cavity with anti-swirling waist circular drum hole[J]. Journal of Aerospace Power, 2024, 39（8）：20220075 doi: 10.13224/j.cnki.jasp.20220075
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Research on the vortex breakdown and pressure loss characteristics in the cavity with anti-swirling waist circular drum hole

doi: 10.13224/j.cnki.jasp.20220075

  • College of Energy and Power Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China

  • Received Date: 2022-02-21
    Available Online: 2024-03-27
    Abstract

  • To reduce the pressure loss in a compressor disk cavity, an anti-swirling waist circular drum hole structure was designed. Large Eddy simulation (LES) and the RNG k-ε model were used to investigate the vortex evolution and pressure loss characteristics in the cavity, respectively, revealing the vortex breakdown mechanism and drag reduction mechanism of the anti-swirling waist circular drum hole. The results showed that the anti-swirling waist circular drum hole can reduce the pressure loss in the cavity. The high-speed vortex was intensified rapidly in the low region of the cavity with waist circular drum, and the vortex scale increased rapidly, resulting in the rapid increase of pressure loss coefficient with the radial height decrease. Compared with the waist circular drum hole, the anti-swirling waist circular drum hole can effectively restrain the vortex scale increase and reduce the pressure loss in the cavity by 15.6%. With simple structure and linear airflow characteristic, the anti-swirling waist circular drum hole has high engineering application value.

     

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