Floating oscillating water column (OWC) type wave energy converters (WECs), compared to fixed OWC WECs that are installed near the coastline, can be more effective as they are subject to offshore waves before the occurrence of wave dissipation at a nearshore location. The performance of floating OWC WECs has been widely studied using both numerical and experimental methods. However, due to the complexity of fluid–structure interaction of floating OWC WECs, most of the available studies focus on 2D problems with WEC models of limited degrees-of-freedom (DOF) of motion, while 3D mooring effects and multiple-DOF OWC WECs have not been extensively investigated yet under 2D and 3D wave conditions. Therefore, in order to gain a deeper insight into these problems, the present study focuses on wave flume experiments to investigate the motion and mooring performance of a scaled floating OWC WEC model under 2D wave conditions. As a preparatory phase for the present MaRINET2 EsflOWC (efficiency and survivability of floating OWC) project completed at the end of 2017, experiments were also carried out in advance in the large wave flume of Ghent University. The following data were obtained during these experimental campaigns: multiple-DOF OWC WEC motions, mooring line tensions, free surface elevations throughout the wave flume, close to and inside the OWC WEC, change in the air pressure inside the OWC WEC chamber and velocity of the airflow through the vent on top of the model. The tested wave conditions mostly include nonlinear intermediate regular waves. The data obtained at the wave flume of Ghent University, together with the data from the EsflOWC tests at the wave flume of LABIMA, University of Florence, provide a database for numerical validation of research on floating OWC WECs and floating OWC WEC farms or arrays used by researchers worldwide.

中文翻译：

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系泊在海底的浮动振荡水柱波浪能转换器的效率和生存能力：EsflOWC MaRINET2 数据库概述

与安装在海岸线附近的固定 OWC WEC 相比，浮动振荡水柱 (OWC) 型波浪能转换器 (WEC) 可以更有效，因为它们在近岸位置发生波浪消散之前会受到海上波浪的影响。已经使用数值和实验方法广泛研究了浮动 OWC WEC 的性能。然而，由于浮动 OWC WEC 的流固耦合的复杂性，大多数可用的研究都集中在有限自由度 (DOF) 的 WEC 模型的 2D 问题上，而 3D 系泊效应和多自由度 OWC WEC 在 2D 和 3D 波条件下尚未得到广泛研究。因此，为了更深入地了解这些问题，本研究侧重于波浪水槽实验，以研究缩放浮动 OWC WEC 模型在二维波浪条件下的运动和系泊性能。作为目前于 2017 年底完成的 MaRINET2 EsflOWC（浮式 OWC 的效率和生存能力）项目的准备阶段，也在根特大学的大波浪水槽中提前进行了实验。在这些实验活动中获得了以下数据：多自由度 OWC WEC 运动、系泊线张力、整个波浪水槽的自由表面高度、靠近和内部的 OWC WEC、OWC WEC 室内气压的变化和速度气流通过模型顶部的通风口。被测波情况多为非线性中间规则波。在根特大学波槽获得的数据，