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Research on wavestar-like wave energy converter arrays with a truss-type octagonal floating platform in the South China Sea

Author

Listed:
  • Luan, Zhengxiao
  • Chen, Bangqi
  • He, Guanghua
  • Cui, Ting
  • Ghassemi, Hassan
  • Zhang, Zhigang
  • Liu, Chaogang

Abstract

Interactions between wave energy converters (WECs) in an array have been a recurring topic of investigation. In this study, a novel concept of multiple wavestar-like WECs concentrically arranged on a floating truss-type octagonal platform (TOP-WECs) system is proposed. To confirm the feasibility and hydrodynamic performance of the proposed concept, three-dimensional CFD-based numerical wave tanks (CNWTs) for different scenarios are developed, and validated via experimental tests. Based on the established CNWTs, the performance of the TOP-WECs system is studied via various scenario cases, including the influence of different platform types on hydrodynamic performance and wave-surface elevation, the interaction effect of TOP-WECs in different configurations with a stationary platform on motion response, power extraction, and energy conversion efficiency, and, ultimately, the performance of TOP-WECs with a floating platform. The results indicate that the interaction factor (q-factor) varies from 0.8 to 0.9 in the present configuration study of different arrays, and the absorbed power of the wavestar-like WEC on the lee side is generally greater than that on the weather side. The findings of this work could help in the implementation of cost-sharing wavestar WEC arrays, with the objective of reducing the overall cost of wave energy generation.

Suggested Citation

  • Luan, Zhengxiao & Chen, Bangqi & He, Guanghua & Cui, Ting & Ghassemi, Hassan & Zhang, Zhigang & Liu, Chaogang, 2024. "Research on wavestar-like wave energy converter arrays with a truss-type octagonal floating platform in the South China Sea," Energy, Elsevier, vol. 313(C).
    • Handle: RePEc:eee:energy:v:313:y:2024:i:c:s0360544224038489
    DOI: 10.1016/j.energy.2024.134070
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    References listed on IDEAS

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