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On survivability of asymmetric wave-energy converters in extreme waves

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  • Madhi, Farshad
  • Yeung, Ronald W.

Abstract

To provide guidance for improving the survivability of asymmetrical wave-energy converters (AWECs), the forces experienced by them in breaking-waves condition were analyzed and reported. “The Berkeley Wedge” (TBW), a highly efficient wave-energy converter and floating breakwater, was used as a canonical study. The forces were obtained by computation using the Weakly Compressible Smoothed Particle Hydrodynamics (WCSPH) method and by model-scale experiments. Breaking waves were first generated upstream for both physical and computational modeling by developing appropriate time histories of a wavemaker. Plunging breakers and wave forces from the computational model were verified by experiments for different drafts. To increase the survivability, while retaining the same operational draft of TBW, pressure-relief channel (PRC), a novel scheme that allowed water to flow through TBW was modeled and its effectiveness in extreme-waves was demonstrated computationally. A design was proposed to operate the PRCs so as to increase the survivability of such AWECs.

Suggested Citation

  • Madhi, Farshad & Yeung, Ronald W., 2018. "On survivability of asymmetric wave-energy converters in extreme waves," Renewable Energy, Elsevier, vol. 119(C), pages 891-909.
    • Handle: RePEc:eee:renene:v:119:y:2018:i:c:p:891-909
    DOI: 10.1016/j.renene.2017.07.123
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    References listed on IDEAS

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    1. López, Iraide & Andreu, Jon & Ceballos, Salvador & Martínez de Alegría, Iñigo & Kortabarria, Iñigo, 2013. "Review of wave energy technologies and the necessary power-equipment," Renewable and Sustainable Energy Reviews, Elsevier, vol. 27(C), pages 413-434.
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    10. Cheng, Yong & Du, Weiming & Dai, Saishuai & Ji, Chunyan & Collu, Maurizio & Cocard, Margot & Cui, Lin & Yuan, Zhiming & Incecik, Atilla, 2022. "Hydrodynamic characteristics of a hybrid oscillating water column-oscillating buoy wave energy converter integrated into a π-type floating breakwater," Renewable and Sustainable Energy Reviews, Elsevier, vol. 161(C).
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    12. Zhao, Xuanlie & Zhang, Yang & Li, Mingwei & Johanning, Lars, 2020. "Hydrodynamic performance of a Comb-Type Breakwater-WEC system: An analytical study," Renewable Energy, Elsevier, vol. 159(C), pages 33-49.
    13. Rosa-Santos, Paulo & Taveira-Pinto, Francisco & Rodríguez, Claudio A. & Ramos, Victor & López, Mario, 2019. "The CECO wave energy converter: Recent developments," Renewable Energy, Elsevier, vol. 139(C), pages 368-384.
    14. Hossain, Nazia & Zaini, Juliana & Mahlia, T.M.I. & Azad, Abul K., 2019. "Elemental, morphological and thermal analysis of mixed microalgae species from drain water," Renewable Energy, Elsevier, vol. 131(C), pages 617-624.

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