Experimental Study on Conversion Characteristics of Dual-Mode OWC Models Appropriate for Voyaging  

作　　者：WU Bi-jun ZHANG Fu-ming QIN Zi-zhen WU Heng-yu RAO Xiang 

机构地区：[1]Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China [2]Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou),Guangzhou 511458,China [3]Key Laboratory of Renewable Energy,CAS,Guangzhou 510640,China [4]University of Chinese Academy of Sciences,Beijing 100049,China [5]South China Normal University,Guangzhou 510631,China [6]University of Science and Technology of China,Hefei 230026,China

出　　处：《China Ocean Engineering》2023年第2期247-257,共11页中国海洋工程（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (Grant Nos. 51879253 and U20A20106)。

摘　　要：Freely movable wave energy converters(WECs) will greatly improve their adaptability to the marine environment.In this paper, a dual-mode oscillating water column(OWC) WEC with potential sailing capability is proposed. By opening and closing a gate on the side facing the waves, the WEC converts wave energy in the vertical duct(called VD mode) with low sailing resistance or in the backward bend duct(called BBD mode) with high sailing resistance.A small model and a medium model were designed and manufactured. The capture width ratio(CWR) of the small model in the two modes was experimentally studied. The CWR under bidirectional airflow and conversion characteristics under unidirectional airflow of the medium model in the BBD mode were obtained. Tests of the small model show that the peak CWR is 145.2% under regular waves and 90.1% under random waves in BBD mode, and in VD mode the peak CWR is about 60% of that in the BBD mode. Tests of the medium model show that the peak CWR is 228.96% under regular waves, the maximum wave-to-battery efficiency is 63.36% under regular waves and 30.17%under random waves, respectively.

关 键 词：wave energy oscillating water column(OWC) capture width ratio(CWR) wave-to-battery conversion efficiency 

分 类 号：TV139.25[水利工程—水力学及河流动力学]