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A review on flow and sediment erosion in guide vanes of Francis turbines

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Listed:
  • Koirala, Ravi
  • Thapa, Bhola
  • Neopane, Hari Prasad
  • Zhu, Baoshan

Abstract

Guide vanes in Francis turbine faces frequent erosion due to its operation in sand laden water, which demands focus on design, manufacturing, operation and maintenance of turbines. These vanes are designed on high precision with standard hydrofoils for efficient conversion of pressure to kinetic energy. The erosion on surfaces, upper and lower ends and leading and trailing edges of guide vanes induces cross flow at clearance gaps, tip leakage at trailing edges and high friction on the surfaces, increasing hydraulic losses associated with flow. Review on post erosion hydraulic and mechanical effect on guide vanes and its vicinity are the main objectives of this work. It has been assisted by flow around vanes, field observation of erosion, possible operational problem and method of laboratory estimation of erosion. The vulnerable locations, erosion severity, possible post erosion problems, research gap and possible measures to comprehend them have been focused, which will be useful in further research activities.

Suggested Citation

  • Koirala, Ravi & Thapa, Bhola & Neopane, Hari Prasad & Zhu, Baoshan, 2017. "A review on flow and sediment erosion in guide vanes of Francis turbines," Renewable and Sustainable Energy Reviews, Elsevier, vol. 75(C), pages 1054-1065.
    • Handle: RePEc:eee:rensus:v:75:y:2017:i:c:p:1054-1065
    DOI: 10.1016/j.rser.2016.11.085
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    References listed on IDEAS

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    1. Ravi Koirala & Baoshan Zhu & Hari Prasad Neopane, 2016. "Effect of Guide Vane Clearance Gap on Francis Turbine Performance," Energies, MDPI, vol. 9(4), pages 1-14, April.
    2. Thapa, Biraj Singh & Dahlhaug, Ole Gunnar & Thapa, Bhola, 2015. "Sediment erosion in hydro turbines and its effect on the flow around guide vanes of Francis turbine," Renewable and Sustainable Energy Reviews, Elsevier, vol. 49(C), pages 1100-1113.
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    Cited by:

    1. Xiao, Yexiang & Guo, Bao & Rai, Anant Kumar & Liu, Jie & Liang, Quanwei & Zhang, Jin, 2022. "Analysis of hydro-abrasive erosion in Pelton buckets using a Eulerian-Lagrangian approach," Renewable Energy, Elsevier, vol. 197(C), pages 472-485.
    2. Yang, Jing & Peng, Chong & Li, Changquan & Liu, Xinjun & Liu, Jian & Wang, Zhengwei, 2023. "Design and verification of Francis turbine working in sand laden hydro-power plant," Renewable Energy, Elsevier, vol. 207(C), pages 40-46.
    3. Xuanlin Peng & Jianzhong Zhou & Chu Zhang & Ruhai Li & Yanhe Xu & Diyi Chen, 2017. "An Intelligent Optimization Method for Vortex-Induced Vibration Reducing and Performance Improving in a Large Francis Turbine," Energies, MDPI, vol. 10(11), pages 1-17, November.

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