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Experimental study of a WEC array-floating breakwater hybrid system in multiple-degree-of-freedom motion

Author

Listed:
  • Zhou, Binzhen
  • Huang, Xu
  • Lin, Chusen
  • Zhang, Hengming
  • Peng, Jiaxin
  • Nie, Zuli
  • Jin, Peng

Abstract

Installing an array of wave energy converters (WECs) on an existing breakwater is viable to reduce the high cost and improve the reliability of wave energy applications. The interaction between WECs and floating breakwater under multi-degree-of-freedom motion is crucial but not well investigated, especially the impact of WECs on the mooring system of the breakwater. This article fills this gap by experimentally studying a hybrid system consisting of a rectangle floating breakwater and an array of oscillating body WECs. The interactions between the WEC and the breakwater, the effect of the WEC bottom shape on the hybrid system, and the performance of the hybrid system in waves with different nonlinearities are investigated. Results indicate that the wave amplification effect of the breakwater improves the wave energy conversion performance of the WEC by up to 324.6%. As the WEC absorbs wave energy, the mooring forces of the breakwater in the pitch and surge directions decrease by up to 19.8% and 47.4%, respectively. When the incident wave height increases, the energy extraction performance of the hybrid system improves while the wave attenuation performance decreases. This study provides a reference for the practical application of WEC-breakwater hybrid systems and test data for the validation of numerical methods.

Suggested Citation

  • Zhou, Binzhen & Huang, Xu & Lin, Chusen & Zhang, Hengming & Peng, Jiaxin & Nie, Zuli & Jin, Peng, 2024. "Experimental study of a WEC array-floating breakwater hybrid system in multiple-degree-of-freedom motion," Applied Energy, Elsevier, vol. 371(C).
    • Handle: RePEc:eee:appene:v:371:y:2024:i:c:s0306261924010778
    DOI: 10.1016/j.apenergy.2024.123694
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    Cited by:

    1. Kumar Reddy Cheepati & Suresh Babu Daram & Ch. Rami Reddy & T. Mariprasanth & Basem Alamri & Mohammed Alqarni, 2024. "Analysis of Transient Stability through a Novel Algorithm with Optimization under Contingency Conditions," Energies, MDPI, vol. 17(17), pages 1-26, September.
    2. Haoyu Ding, 2024. "Hydrodynamic Performance of a Dual-Pontoon WEC-Breakwater System: An Analysis of Wave Energy Content and Converter Efficiency," Energies, MDPI, vol. 17(16), pages 1-19, August.

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