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      Experimental Study on the Hydrodynamic Performance of a Heaving Buoy Assembled on a Net Cage Platform

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          To take advantage of the abundance of both fishery and wave energy resources in offshore sea areas, a novel floating platform with a heaving buoy-based wave energy converter (WEC) assembled with a set of net cages is presented in this work. The floating WEC system provides a power supply, while the net cages are used for aquaculture. It is designed to have an independent and self-operation breeding function. An experimental study is carried out to investigate the hydrodynamic performance of the device in a wave tank considering the factors of net cages, draft depth, and power take-off, and results show that these variables have significant effects on wave energy capture. Incident waves with short periods cause intense interactions that allow the device to undergo large relative motion. The draft depth could be determined according to wave period rather than wave height. This study also explores the response amplitude operator of the device and determines its resonance scope. The experimental results could provide reliable information for future studies on phase differences and the design of two-body WECs.

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          Author and article information

          Journal of Ocean University of China
          Science Press and Springer (China )
          24 August 2019
          01 October 2019
          : 18
          : 5
          : 1031-1040
          1Shandong Provincial Key Laboratory of Ocean Engineering, Ocean University of China, Qingdao 266100, China
          2Department of Ocean Engineering, College of Engineering, Ocean University of China, Qingdao 266100, China
          3Qingdao Municipal Key Laboratory of Ocean Renewable Energy, Ocean University of China, Qingdao 266100, China
          Author notes
          *Corresponding author: SHI Hongda
          Copyright © Ocean University of China, Science Press and Springer-Verlag GmbH Germany 2019.

          The copyright to this article, including any graphic elements therein (e.g. illustrations, charts, moving images), is hereby assigned for good and valuable consideration to the editorial office of Journal of Ocean University of China, Science Press and Springer effective if and when the article is accepted for publication and to the extent assignable if assignability is restricted for by applicable law or regulations (e.g. for U.S. government or crown employees).

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