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CFD model and experimental verification of water turbine integrated with electrical generator

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  • Borkowski, Dariusz
  • Węgiel, Michał
  • Ocłoń, Paweł
  • Węgiel, Tomasz

Abstract

The paper presents the analysis of the small hydropower plant working at variable speed. The hydro-set that consists of the guide vanes and propeller turbine integrated with the permanent magnet synchronous generator is simulated by using Computational Fluid Dynamics (CFD) in Ansys Fluent v18.0. The important part of the paper is the analysis of the mechanical power losses in the hydro-set gap. The analytical and numerical calculations show that these losses are significant and have to be considered in performance calculations. The k-ε and k-ω SST models, as well as the one-equation Spalart-Allmaras (SA) model, were tested and verified on the experimental hydropower plant of 75 kW power. The comparison showed that the best agreement with experimental results provides the Spalart-Allmaras model.

Suggested Citation

  • Borkowski, Dariusz & Węgiel, Michał & Ocłoń, Paweł & Węgiel, Tomasz, 2019. "CFD model and experimental verification of water turbine integrated with electrical generator," Energy, Elsevier, vol. 185(C), pages 875-883.
    • Handle: RePEc:eee:energy:v:185:y:2019:i:c:p:875-883
    DOI: 10.1016/j.energy.2019.07.091
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    References listed on IDEAS

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    1. Goyal, Rahul & Gandhi, Bhupendra K., 2018. "Review of hydrodynamics instabilities in Francis turbine during off-design and transient operations," Renewable Energy, Elsevier, vol. 116(PA), pages 697-709.
    2. Ardizzon, G. & Cavazzini, G. & Pavesi, G., 2014. "A new generation of small hydro and pumped-hydro power plants: Advances and future challenges," Renewable and Sustainable Energy Reviews, Elsevier, vol. 31(C), pages 746-761.
    3. Aggidis, G.A. & Luchinskaya, E. & Rothschild, R. & Howard, D.C., 2010. "The costs of small-scale hydro power production: Impact on the development of existing potential," Renewable Energy, Elsevier, vol. 35(12), pages 2632-2638.
    4. Gohil, Pankaj P. & Saini, R.P., 2015. "Effect of temperature, suction head and flow velocity on cavitation in a Francis turbine of small hydro power plant," Energy, Elsevier, vol. 93(P1), pages 613-624.
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    Cited by:

    1. Damian Liszka & Zbigniew Krzemianowski & Tomasz Węgiel & Dariusz Borkowski & Andrzej Polniak & Konrad Wawrzykowski & Artur Cebula, 2022. "Alternative Solutions for Small Hydropower Plants," Energies, MDPI, vol. 15(4), pages 1-31, February.

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