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System design and optimization study of axial flow turbine applied in an overtopping wave energy convertor

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Abstract

The axial flow turbine applied in an overtopping wave energy convertor can continuously provide power with high efficiency and reliably. To study the rules between parameters of the turbine and flows, three different types of turbines with complete 3D flow-channel models were designed and optimized. It appears that diameter of the runner, flow rates, number of guide vanes and shape of outflow passage have a considerable impact on the performance of the whole convertor. The turbine with a diameter of 0.8 m, flow rate of 0.5 m3/s, double guide vanes and bent section in outflow passage shows the best comprehensive performance. Moreover, the results of the experiments indicate that the output power can be enhanced by increasing the wave overtopping rate.

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Authors and Affiliations

  1. College of Water Conservancy and Hydropower, Hohai University, Nanjing, 210098, China

    YUQUAN ZHANG, CHUNXIA YANG & YANTAO ZHU

  2. College of Energy and Electrical Engineering, Hohai University, Nanjing, 210098, China

    YUAN ZHENG & XIN ZHANG

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  1. YUQUAN ZHANG
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  2. YUAN ZHENG
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  3. CHUNXIA YANG
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  4. YANTAO ZHU
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  5. XIN ZHANG
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Correspondence to YUQUAN ZHANG.

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Acknowledgements

The research work was supported by the following funding: Research on hydrodynamic issues in tidal power (Chinese National Foundation of Natural Science-Key Projects, No. 51339005) and the Fundamental Research Funds for the Central Universities (No. 2014B37614). The Chinese Scholarship Council supports the first author (No. 201406710029) for studying in the University of Manchester (UK), where this paper was competed.

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ZHANG, Y., ZHENG, Y., YANG, C. et al. System design and optimization study of axial flow turbine applied in an overtopping wave energy convertor. Sadhana 40, 2313–2331 (2015). https://doi.org/10.1007/s12046-015-0447-6

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  • DOI: https://doi.org/10.1007/s12046-015-0447-6

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