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

Author

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

Abstract

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

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    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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    Cited by:

    1. Ni, Dan & Zhang, Ning & Gao, Bo & Li, Zhong & Yang, Minguan, 2020. "Dynamic measurements on unsteady pressure pulsations and flow distributions in a nuclear reactor coolant pump," Energy, Elsevier, vol. 198(C).
    2. Gongcheng Liu & Xudi Qiu & Jiayi Ma & Diyi Chen & Xiao Liang, 2022. "Influence of Flexible Generation Mode on the Stability of Hydropower Generation System: Stability Assessment of Part-Load Operation," Energies, MDPI, vol. 15(11), pages 1-19, May.
    3. Li, Deyou & Wang, Hongjie & Qin, Yonglin & Li, Zhenggui & Wei, Xianzhu & Qin, Daqing, 2018. "Mechanism of high amplitude low frequency fluctuations in a pump-turbine in pump mode," Renewable Energy, Elsevier, vol. 126(C), pages 668-680.
    4. Bosioc, Alin Ilie & Tănasă, Constantin, 2020. "Experimental study of swirling flow from conical diffusers using the water jet control method," Renewable Energy, Elsevier, vol. 152(C), pages 385-398.
    5. Gabl, Roman & Innerhofer, Daniel & Achleitner, Stefan & Righetti, Maurizio & Aufleger, Markus, 2018. "Evaluation criteria for velocity distributions in front of bulb hydro turbines," Renewable Energy, Elsevier, vol. 121(C), pages 745-756.
    6. Raluca G. Iovănel & Georgiana Dunca & Diana M. Bucur & Michel J. Cervantes, 2020. "Numerical Simulation of the Flow in a Kaplan Turbine Model during Transient Operation from the Best Efficiency Point to Part Load," Energies, MDPI, vol. 13(12), pages 1-21, June.
    7. Baidar, Binaya & Nicolle, Jonathan & Gandhi, Bhupendra K. & Cervantes, Michel J., 2020. "Effects of runner change on the Winter-Kennedy flow measurement method – A numerical study," Renewable Energy, Elsevier, vol. 153(C), pages 975-984.
    8. Daniels, S.J. & Rahat, A.A.M. & Tabor, G.R. & Fieldsend, J.E. & Everson, R.M., 2020. "Shape optimisation of the sharp-heeled Kaplan draft tube: Performance evaluation using Computational Fluid Dynamics," Renewable Energy, Elsevier, vol. 160(C), pages 112-126.
    9. Martinez, J.J. & Deng, Z.D. & Titzler, P.S. & Duncan, J.P. & Lu, J. & Mueller, R.P. & Tian, C. & Trumbo, B.A. & Ahmann, M.L. & Renholds, J.F., 2019. "Hydraulic and biological characterization of a large Kaplan turbine," Renewable Energy, Elsevier, vol. 131(C), pages 240-249.
    10. Guo, Bao & Xiao, Yexiang & Rai, Anant Kumar & Zhang, Jin & Liang, Quanwei, 2020. "Sediment-laden flow and erosion modeling in a Pelton turbine injector," Renewable Energy, Elsevier, vol. 162(C), pages 30-42.
    11. Lai, Xi-De & Liang, Quan-Wei & Ye, Dao-Xing & Chen, Xiao-Ming & Xia, Mi-Mi, 2019. "Experimental investigation of flows inside draft tube of a high-head pump-turbine," Renewable Energy, Elsevier, vol. 133(C), pages 731-742.
    12. 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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