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Experimental and computational analysis on guide vane losses of impulse turbine for wave energy conversion

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  • Thakker, A.
  • Dhanasekaran, T.S.

Abstract

This paper deals with the detailed flow analysis of impulse turbine with experimental and computed results for wave energy power conversion. Initially, several turbulence models have been used in two-dimensional (2-D) computational fluid dynamic (CFD) analysis to find a suitable model for this kind of slow speed unconventional turbine. Experiments have been conducted to validate the CFD results and also to analyze the aerodynamics at various stations of the turbine. The three-dimensional (3-D) CFD model with tip clearance has been generated to predict the internal flow and to understand the effect of tip clearance leakage flow on behavior of the turbine in design and off-design conditions. As a result, it is found from the 2-D results that the comparison between computed and experimental data is good, qualitatively and the turbulence model, standard k–ε can predict the experimental values reasonably well, especially the efficiency of the turbine. Experimental results reveal that the downstream guide vanes are more responsible for low efficiency of the turbine and it is measured that 21% average pressure is lost due to downstream guide vanes. It is proved from the 3-D CFD model with tip clearance that it can predict the experimental values quantitatively and qualitatively. Furthermore, it is estimated from the computed results that the efficiency of the turbine has been reduced about 4%, due to tip clearance leakage flow at higher flow coefficients.

Suggested Citation

  • Thakker, A. & Dhanasekaran, T.S., 2005. "Experimental and computational analysis on guide vane losses of impulse turbine for wave energy conversion," Renewable Energy, Elsevier, vol. 30(9), pages 1359-1372.
    • Handle: RePEc:eee:renene:v:30:y:2005:i:9:p:1359-1372
    DOI: 10.1016/j.renene.2004.10.013
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    References listed on IDEAS

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    1. Govardhan, M. & Dhanasekaran, T.S., 2002. "Effect of guide vanes on the performance of a self-rectifying air turbine with constant and variable chord rotors," Renewable Energy, Elsevier, vol. 26(2), pages 201-219.
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    Citations

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    Cited by:

    1. Gato, L.M.C. & Maduro, A.R. & Carrelhas, A.A.D. & Henriques, J.C.C. & Ferreira, D.N., 2021. "Performance improvement of the biradial self-rectifying impulse air-turbine for wave energy conversion by multi-row guide vanes: Design and experimental results," Energy, Elsevier, vol. 216(C).
    2. Mohammad Nasim Uddin & Michael Atkinson & Frimpong Opoku, 2023. "CFD Investigation of a Hybrid Wells Turbine with Passive Flow Control," Energies, MDPI, vol. 16(9), pages 1-28, April.
    3. Badhurshah, Rameez & Dudhgaonkar, Prasad & Jalihal, Purnima & Samad, Abdus, 2018. "High efficiency design of an impulse turbine used in oscillating water column to harvest wave energy," Renewable Energy, Elsevier, vol. 121(C), pages 344-354.
    4. Badhurshah, Rameez & Samad, Abdus, 2015. "Multiple surrogate based optimization of a bidirectional impulse turbine for wave energy conversion," Renewable Energy, Elsevier, vol. 74(C), pages 749-760.
    5. Liu, Hua & Wang, Weijun & Wen, Yadong & Mao, Longbo & Wang, Wenqiang & Mi, Hongju, 2019. "A novel axial flow self-rectifying turbine for use in wave energy converters," Energy, Elsevier, vol. 189(C).
    6. Han, Yadong & Liu, Yabin & Tan, Lei, 2022. "Method of variable-depth groove on vortex and cavitation suppression for a NACA0009 hydrofoil with tip clearance in tidal energy," Renewable Energy, Elsevier, vol. 199(C), pages 546-559.
    7. Yongyao Luo & Alexandre Presas & Zhengwei Wang, 2019. "Numerical Analysis of the Influence of Design Parameters on the Efficiency of an OWC Axial Impulse Turbine for Wave Energy Conversion," Energies, MDPI, vol. 12(5), pages 1-12, March.
    8. Ying, P. & Chen, Y.K. & Xu, Y.G. & Tian, Y., 2015. "Computational and experimental investigations of an omni-flow wind turbine," Applied Energy, Elsevier, vol. 146(C), pages 74-83.
    9. Liu, Zhen & Cui, Ying & Li, Ming & Shi, Hongda, 2017. "Steady state performance of an axial impulse turbine for oscillating water column wave energy converters," Energy, Elsevier, vol. 141(C), pages 1-10.
    10. Lund, H., 2006. "Large-scale integration of optimal combinations of PV, wind and wave power into the electricity supply," Renewable Energy, Elsevier, vol. 31(4), pages 503-515.

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    Keywords

    Guide vane; Turbine; Wave energy;
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