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Experimental study on the evolution process of the roof-attached vortex of the closed sump

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  • Zhang, Di
  • Jiao, Weixuan
  • Cheng, Li
  • Xia, Chenzhi
  • Zhang, Bowen
  • Luo, Can
  • Wang, Chuan

Abstract

After the pump sump has been modified into a closed type, although the free surface vortex is eliminated, a new type of vortex named as the roof-attached vortex (RAV) was induced at the roof. In this paper, the evolution process of the roof-attached vortex was studied by means of high-speed photography and pressure pulsation test. The morphological characteristics of the vortex evolution process at different stages are studied. By arranging the pressure sensors on the roof, it was found that there was a low-frequency component with a high amplitude in the region where the roof-attached vortex was generated, thereby determining the characteristic frequency of the roof-attached vortex and obtain the influence range of the roof-attached vortex on the fluid flow at the roof. The research results can provide reference for the flow mechanism and prevention of the roof-attached vortex of the closed sump.

Suggested Citation

  • Zhang, Di & Jiao, Weixuan & Cheng, Li & Xia, Chenzhi & Zhang, Bowen & Luo, Can & Wang, Chuan, 2021. "Experimental study on the evolution process of the roof-attached vortex of the closed sump," Renewable Energy, Elsevier, vol. 164(C), pages 1029-1038.
    • Handle: RePEc:eee:renene:v:164:y:2021:i:c:p:1029-1038
    DOI: 10.1016/j.renene.2020.10.045
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    References listed on IDEAS

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    1. Lijian Shi & Jun Zhu & Fangping Tang & Chuan Wang, 2020. "Multi-Disciplinary Optimization Design of Axial-Flow Pump Impellers Based on the Approximation Model," Energies, MDPI, vol. 13(4), pages 1-19, February.
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    Cited by:

    1. Li, Lin & Tan, Dapeng & Yin, Zichao & Wang, Tong & Fan, Xinghua & Wang, Ronghui, 2021. "Investigation on the multiphase vortex and its fluid-solid vibration characters for sustainability production," Renewable Energy, Elsevier, vol. 175(C), pages 887-909.
    2. Zhang, Bowen & Cheng, Li & Jiao, Weixuan & Zhang, Di, 2023. "Experimental and statistical analysis of the flap gate energy loss and pressure fluctuation spatiotemporal characteristics of a mixed-flow pump device," Energy, Elsevier, vol. 272(C).
    3. Bowen Zhang & Li Cheng & Chunlei Xu & Mo Wang, 2021. "The Influence of Geometric Parameters of Pump Installation on the Hydraulic Performance of a Prefabricated Pumping Station," Energies, MDPI, vol. 14(4), pages 1-15, February.

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