Effect of Different Raft Shapes on Hydrodynamic Characteristics of the Attenuator-Type Wave Energy Converter  

作　　者：WANG Jin WANG Shu-qi JIANG Qing-dian XU Yun-xin SHI Wei-chao 

机构地区：[1]School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China [2]Department of Naval Architecture,Ocean and Marine Engineering,University of Strathclyde,Glasgow,G40LZ,UK

出　　处：《China Ocean Engineering》2023年第4期645-659,共15页中国海洋工程（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.52071348 and 51979129);the Natural Science Foundation of Jiangsu Province,China(Grant No.BK20201006);the Natural Science Research of Jiangsu Higher Education Institutions of China(Grant No.22KJA130001).

摘　　要：A numerical simulation method based on CFD has been established to simulate the fully coupled motion for an atten-uator-type wave energy converter(WEC).Based on this method,a detailed parametric analysis has been conducted to investigate the design of the rafts.The effects of different parameters(wave parameters,structural parameters and PTO parameters)on the hydrodynamic characteristics of the attenuator-type WEC were studied in detail.The results show that in terms of wave parameters,there is an optimal wave period,which makes the relative pitching angle amplitude of the WEC reach the maximum,and the increase of wave height is conducive to the relative pitching angle amplitude of wave energy.Under different wave conditions,the relative pitch angle of the parallelogram raft device is the maximum.In terms of structural parameters,the parallelogram attenuator-type device has the optimal values in different relative directions,different distances and different apex angle,which makes the relative motion amplitude of the device reach the maximum,and the spacing and the apex angle have influence on the motion frequency of the device,while the relative direction has almost no influence on it.In terms of PTO parameters,there is an optimal damping coefficient,which makes the power generation efficiency of the WEC reach the maximum.The research results provide a valuable reference for future research and design of the attenuator-type WEC.

关 键 词：wave energy converter attenuator-type shape hydrodynamic analysis power generation efficiency 

分 类 号：TM612[电气工程—电力系统及自动化] P743.2[天文地球—海洋科学]