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Unsteadiness of Tip Leakage Flow in the Detached-Eddy Simulation on a Transonic Rotor with Vortex Breakdown Phenomenon

Author

Listed:
  • Xiangyu Su

    (Institute of Gas Turbine, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Xiaodong Ren

    (Institute of Gas Turbine, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Xuesong Li

    (Institute of Gas Turbine, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Chunwei Gu

    (Institute of Gas Turbine, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

Abstract

Tip leakage vortex (TLV) in a transonic compressor rotor was investigated numerically using detached-eddy simulation (DES) method at different working conditions. Strong unsteadiness was found at the tip region, causing a considerable fluctuation in total pressure distribution and flow angle distribution above 80% span. The unsteadiness at near choke point and peak efficiency point is not obvious. DES method can resolve more detailed flow patterns than RANS (Reynolds-averaged Navier–Stokes) results, and detailed structures of the tip leakage flow were captured. A spiral-type breakdown structure of the TLV was successfully observed at the near stall point when the TLV passed through the bow shock. The breakdown of TLV contributed to the unsteadiness and the blockage effect at the tip region.

Suggested Citation

  • Xiangyu Su & Xiaodong Ren & Xuesong Li & Chunwei Gu, 2019. "Unsteadiness of Tip Leakage Flow in the Detached-Eddy Simulation on a Transonic Rotor with Vortex Breakdown Phenomenon," Energies, MDPI, vol. 12(5), pages 1-20, March.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:5:p:954-:d:213260
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    References listed on IDEAS

    as
    1. Yabin Liu & Lei Tan & Binbin Wang, 2018. "A Review of Tip Clearance in Propeller, Pump and Turbine," Energies, MDPI, vol. 11(9), pages 1-30, August.
    2. Hao, Yue & Tan, Lei, 2018. "Symmetrical and unsymmetrical tip clearances on cavitation performance and radial force of a mixed flow pump as turbine at pump mode," Renewable Energy, Elsevier, vol. 127(C), pages 368-376.
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    Cited by:

    1. Botao Zhang & Xiaochen Mao & Xiaoxiong Wu & Bo Liu, 2021. "Effects of Tip Leakage Flow on the Aerodynamic Performance and Stability of an Axial-Flow Transonic Compressor Stage," Energies, MDPI, vol. 14(14), pages 1-19, July.
    2. Lin Li & Wei Tan & Jianshe Zhang & Ge Han & Yanfeng Zhang, 2022. "Unsteady Effects of Wake on Downstream Rotor at Low Reynolds Numbers," Energies, MDPI, vol. 15(18), pages 1-24, September.
    3. Artur J. Jaworski, 2019. "Special Issue “Fluid Flow and Heat Transfer”," Energies, MDPI, vol. 12(16), pages 1-4, August.
    4. Liu, Yabin & Han, Yadong & Tan, Lei & Wang, Yuming, 2020. "Blade rotation angle on energy performance and tip leakage vortex in a mixed flow pump as turbine at pump mode," Energy, Elsevier, vol. 206(C).

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