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Improvement of the Efficiency of the Axial-Flow Pump at Part Loads due to Installing Outlet Guide Vanes Mechanism

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  • Fan Yang
  • Hao-ru Zhao
  • Chao Liu

Abstract

In order to investigate the influence of adjustable outlet guide vane on the hydraulic performance of axial-flow pump at part loads, the axial-flow pump with 7 different outlet guide vane adjustable angles was simulated based on the RNG turbulent model and Reynolds time-averaged equations. The Vector graphs of airfoil flow were analyzed in the different operating conditions for different adjustable angles of guide vane. BP-ANN prediction model was established about the effect of adjustable outlet guide vane on the hydraulic performance of axial-flow pump based on the numerical results. The effectiveness of prediction model was verified by theoretical analysis and numerical simulation. The results show that, with the adjustable angle of guide vane increasing along clockwise, the high efficiency area moves to the large flow rate direction; otherwise, that moves to the small flow rate direction. The internal flow field of guide vane is improved by adjusting angle, and the flow separation of tail and guide vane inlet ledge are decreased or eliminated, so that the hydraulic efficiency of pumping system will be improved. The prediction accuracy of BP-ANN model is 1%, which can meet the requirement of practical engineering.

Suggested Citation

  • Fan Yang & Hao-ru Zhao & Chao Liu, 2016. "Improvement of the Efficiency of the Axial-Flow Pump at Part Loads due to Installing Outlet Guide Vanes Mechanism," Mathematical Problems in Engineering, Hindawi, vol. 2016, pages 1-10, February.
    • Handle: RePEc:hin:jnlmpe:6375314
    DOI: 10.1155/2016/6375314
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    Cited by:

    1. Yue Li & Yiwei Song & Shengsheng Xia & Qiang Li, 2022. "Influence of Guide Vane Slope on Axial-Flow Hydraulic Performance and Internal Flow Characteristics," Energies, MDPI, vol. 15(17), pages 1-10, August.
    2. 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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