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Experimental investigation of floor-attached vortex effects on the pressure pulsation at the bottom of the axial flow pump sump

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  • Song, Xijie
  • Liu, Chao

Abstract

The influence of the floor-attached vortex on the pressure pulsation at the pump sump was investigated using the experimental analysis, and the theoretical analysis according to the theory of eddy dynamics. When the floor-attached vortex appeared under the large flow rate conditions, the time-domain characteristics curves for the pressure pulsation were significantly disordered and the pressure pulsation amplitudes at different points with floor-attached vortex varied significantly. The position of the vortex was consistent with the position of the low-pressure area at the floor of the pump sump and a large pressure gradient existed at the vortex appearing area. Through the theoretical and experimental analysis, it was found that the pressure pulsation induced by the floor-attached vortex fluctuates periodically with time, and the shape of the pressure pulsation curve is approximately the cosine functional curve.

Suggested Citation

  • Song, Xijie & Liu, Chao, 2020. "Experimental investigation of floor-attached vortex effects on the pressure pulsation at the bottom of the axial flow pump sump," Renewable Energy, Elsevier, vol. 145(C), pages 2327-2336.
    • Handle: RePEc:eee:renene:v:145:y:2020:i:c:p:2327-2336
    DOI: 10.1016/j.renene.2019.07.125
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    Citations

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    Cited by:

    1. Cao, Jingwei & Luo, Yongyao & Presas, Alexandre & Ahn, Soo-Hwang & Wang, Zhengwei & Huang, Xingxing & Liu, Yan, 2022. "Influence of rotation on the modal characteristics of a bulb turbine unit rotor," Renewable Energy, Elsevier, vol. 187(C), pages 887-895.
    2. Wenpeng Zhang & Fangping Tang & Lijian Shi & Qiujin Hu & Ying Zhou, 2020. "Effects of an Inlet Vortex on the Performance of an Axial-Flow Pump," Energies, MDPI, vol. 13(11), pages 1-23, June.
    3. Song, Xijie & Liu, Chao, 2021. "Experimental study of the floor-attached vortices in pump sump using V3V," Renewable Energy, Elsevier, vol. 164(C), pages 752-766.
    4. Pu, Kexin & Huang, Bin & Miao, Hongjiang & Shi, Peili & Wu, Dazhuan, 2022. "Quantitative analysis of energy loss and vibration performance in a circulating axial pump," Energy, Elsevier, vol. 243(C).
    5. Kan, Kan & Yang, Zixuan & Lyu, Pin & Zheng, Yuan & Shen, Lian, 2021. "Numerical study of turbulent flow past a rotating axial-flow pump based on a level-set immersed boundary method," Renewable Energy, Elsevier, vol. 168(C), pages 960-971.

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