Hydrodynamic Performance of An Integrated System of Breakwater and A Multi-Chamber OWC Wave Energy Converter

NING De-zhi ¹ZHANG Xiang-yu ¹WANG Rong-quan ¹ZHAO Ming²

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作者信息

1. State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China;Dalian Key Laboratory of Offshore Renewable Energy,Dalian University of Technology,Dalian 116024,China
2. State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China;School of Computing,Engineering and Mathematics,University of Western Sydney,Penrith NSW 2751,Australia
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Abstract

A multi-chamber oscillating water column wave energy converter(OWC-WEC)integrated to a breakwater is investi-gated.The hydrodynamic characteristics of the device are analyzed using an analytical model based on the linear potential flow theory.A pneumatic model is employed to investigate the relationship between the air mass flux in the chamber and the turbine characteristics.The effects of chamber width,wall draft and wall thickness on the hydrodynamic performance of a dual-chamber OWC-WEC are investigated.The results demonstrate that the device,with a smaller front wall draft and a wider rear chamber exhibits a broader effective frequency bandwidth.The device with a cham-ber-width-ratio of 1:3 performs better in terms of power absorption.Additionally,results from the analysis of a triple-chamber OWC-WEC demonstrate that reducing the front chamber width and increasing the rearward chamber width can improve the total performance of the device.Increasing the number of chambers from 1 to 2 or 3 can widen the effective frequency bandwidth.

Key words

oscillating water column/power extraction efficiency/potential flow theory/wave energy converter/multi-chamber

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基金项目

国家自然科学基金(U22A20242)

国家自然科学基金(52271260)

国家自然科学基金(52001054)

辽宁省自然科学基金(2021-BS-060)

中央高校基本科研业务费专项(DUT23RC3017)

出版年

2024

中国海洋工程(英文版)

中国海洋学会

中国海洋工程(英文版)

CSTPCDEI

影响因子：0.338

ISSN：0890-5487

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