Abstract A breakwater-WEC system combining heaving body Wave Energy Converters (WEC) and Comb-Type Breakwater (CTB) was investigated. The traditional CTB consists of a distributed array of separated bottom-mounted caissons and wave chambers are located between two caissons. Heaving bodies provide the power take off (PTO) principles that are arranged at the wave chamber of the CTB. The interaction of the CTB and WEC was investigated based on the linear potential flow theory. An analytical model has been developed to examine the hydrodynamic performance of CTB-WEC system. The analytical model is validated with results from an experimental study. Results show that an increase in conversion efficiency is observed when the device is located in the aft end of the wave chamber. A high efficiency (i.e., 77.4%) and qualified wave attenuation performance of the integrated system are achieved for the proposed CTB-WEC system. The wave resonance along the incident wave direction in the wave chamber is beneficial for wave energy capturing. Furthermore, it was found that the critical value kc corresponds to the wave resonance, perpendicular to the incident wave direction, out of the wave chamber. The property of efficiency mitigation at regions of k > kc should be avoided while designing such a system.

中文翻译：

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梳状防波堤-WEC 系统的水动力性能：分析研究

摘要 研究了一种结合波浪能转换器（WEC）和梳状防波堤（CTB）的防波堤-WEC系统。传统的 CTB 由一组分布在底部的独立沉箱组成，波浪室位于两个沉箱之间。垂荡体提供布置在 CTB 波浪室的动力输出 (PTO) 原理。基于线性势流理论研究了 CTB 和 WEC 的相互作用。已经开发了一个分析模型来检查 CTB-WEC 系统的水动力性能。分析模型通过实验研究的结果进行了验证。结果表明，当设备位于波室后端时，观察到转换效率提高。高效率（即 77. 4%) 和集成系统的合格波衰减性能被提议的 CTB-WEC 系统实现。波室中沿入射波方向的波共振有利于波能捕获。此外，还发现临界值 kc 对应于波室之外的波共振，垂直于入射波方向。在设计这样的系统时，应该避免 k > kc 区域的效率降低特性。