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Experimental investigation of a Kaplan draft tube – Part II: Off-design conditions


  • Jonsson, P.P.
  • Mulu, B.G.
  • Cervantes, M.J.


Off-design conditions of hydropower turbines are becoming more frequent with the deregulation of electricity markets and the introduction of renewable energy resources. Originally, turbines were not built to operate under such conditions. It is evident that there is a need to develop turbines that can operate under off-design conditions while attaining high efficiency. This may be achieved with computational fluid dynamics (CFD). However, the complexity of Kaplan turbine flows is challenging to treat using CFD. Therefore, detailed experimental investigations are necessary to validate and develop CFD.

Suggested Citation

  • Jonsson, P.P. & Mulu, B.G. & Cervantes, M.J., 2012. "Experimental investigation of a Kaplan draft tube – Part II: Off-design conditions," Applied Energy, Elsevier, vol. 94(C), pages 71-83.
  • Handle: RePEc:eee:appene:v:94:y:2012:i:c:p:71-83
    DOI: 10.1016/j.apenergy.2012.01.032

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    References listed on IDEAS

    1. Mulu, B.G. & Jonsson, P.P. & Cervantes, M.J., 2012. "Experimental investigation of a Kaplan draft tube – Part I: Best efficiency point," Applied Energy, Elsevier, vol. 93(C), pages 695-706.
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    1. repec:eee:renene:v:121:y:2018:i:c:p:745-756 is not listed on IDEAS
    2. Trivedi, Chirag & Cervantes, Michel J., 2017. "Fluid-structure interactions in Francis turbines: A perspective review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 68(P1), pages 87-101.

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    Kaplan; LDA; Pressure recovery; Phase-averaged; RVR;


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