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Research on Aerodynamic Design of an End Wall Based on a Quasi-3D Optimization Method

Author

Listed:
  • Tingsong Yan

    (School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)

  • Huanlong Chen

    (School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)

  • Zhiqian Wu

    (School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)

  • Yang Liu

    (School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)

  • Peigang Yan

    (School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)

Abstract

To investigate the effects of different passage structures on the aerodynamic performance of the transonic fans, this paper develops a reliable and practical quasi-3D optimization method for the hub based on the experimental data of Stage 67. In the method, the hub profile of Stage 67 can be optimized without changing the geometrical data of the blades. The optimization results show that stream tube diffusion characteristics depend on the hub profile’s curvature in the boundary layer near the hub. In the front part of the hub, the end wall with a concave construction can enhance the expansion of the stream tubes near the root of the rotor blade, which helps control the diffusion flow of viscous fluid effectively to decrease the low-energy fluid’s energy degradation and radial secondary flow in the boundary layer. In the latter part of the hub, the end wall with a convex construction facilitates the shrinkage of stream tubes to decrease the secondary flow loss and separated flow loss by controlling the separation of the boundary layer efficiently. This construction of the hub profile is beneficial to promote the aerodynamic performance of a transonic fan.

Suggested Citation

  • Tingsong Yan & Huanlong Chen & Zhiqian Wu & Yang Liu & Peigang Yan, 2023. "Research on Aerodynamic Design of an End Wall Based on a Quasi-3D Optimization Method," Energies, MDPI, vol. 16(4), pages 1-21, February.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:4:p:1859-:d:1067267
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    References listed on IDEAS

    as
    1. Luo, Dan & Sun, Xiaojing & Huang, Diangui, 2020. "Design of 1 + 1 / 2 counter rotating centrifugal turbine and performance comparison with two-stage centrifugal turbine," Energy, Elsevier, vol. 211(C).
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