Abstract The aim of this work is to analyze the performance of the Overtopping Breakwater for Energy Conversion (OBREC), developed by the team of the University of Campania and installed at prototype scale in the port of Naples. It is a multifunctional coastal structure aimed to protect harbors and produce energy, based on the overtopping principle. This device has been preliminary analyzed by means of experimental and numerical investigations. This contribution provides for the first time an integrated assessment of the OBREC hydraulic and structural performance, by means of the measurements collected at the prototype installation and of numerical modelling i.e. methodologies not affected by the scale effects. The numerical model, developed in the openFOAM environment, is calibrated on the field data gathered during a storm event and is then applied to extend the information related to the OBREC response under the typical wave climate. The results obtained are proposed in terms of overtopping discharge rates and pressures acting along the OBREC profile, under several sea states. Based on these results some recommendations and indications regarding the optimal cross section design are given to maximize the energy production, without compromising the structural stability, and to promote the device exploitability.

中文翻译：

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意大利那不勒斯湾 OBREC 装置的水力和结构性能综合评估

摘要 这项工作的目的是分析由坎帕尼亚大学团队开发并在那不勒斯港以原型规模安装的用于能量转换的越顶防波堤（OBREC）的性能。它是一个多功能的海岸结构，旨在保护港口和生产能源，基于漫溢原则。该装置已经通过实验和数值研究进行了初步分析。该贡献首次通过在原型安装处收集的测量值和数值建模（即不受规模效应影响的方法）对 OBREC 的水力和结构性能进行了综合评估。在 openFOAM 环境中开发的数值模型，对风暴事件期间收集的现场数据进行校准，然后应用于扩展与典型波浪气候下的 OBREC 响应相关的信息。获得的结果是根据在几种海况下沿 OBREC 剖面作用的溢流率和压力提出的。基于这些结果，给出了一些关于最佳横截面设计的建议和指示，以在不影响结构稳定性的情况下最大限度地提高能源产量，并提高设备的可利用性。