Hydrodynamic performance of a multi-Oscillating Water Column (OWC) platform

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dc.contributor.author Zheng, Siming
dc.contributor.author Antonini, Alessandro
dc.contributor.author Zhang, Yongliang
dc.contributor.author Miles, Jon
dc.contributor.author Greaves, Deborah
dc.contributor.author Zhu, Guixun
dc.contributor.author Iglesias, Gregorio
dc.date.accessioned 2020-05-11T09:25:03Z
dc.date.available 2020-05-11T09:25:03Z
dc.date.issued 2020-05-10
dc.identifier.citation Zheng, S., Antonini, A., Zhang, Y., Miles, J., Greaves, D., Zhu, G. and Iglesias, G. (2020) 'Hydrodynamic performance of a multi-Oscillating Water Column (OWC) platform', Applied Ocean Research, 99, 102168. doi: 10.1016/j.apor.2020.102168 en
dc.identifier.volume 99 en
dc.identifier.issn 0141-1187
dc.identifier.uri http://hdl.handle.net/10468/9903
dc.identifier.doi 10.1016/j.apor.2020.102168 en
dc.description.abstract A rectangular barge consisting of multiple oscillating water columns (OWCs) is considered in this paper, hereinafter referred to as a multi–OWC platform. Each OWC chamber is enclosed by two partially submerged vertical walls and the deck of the platform. An incident wave produces oscillation of the water column in each OWC chamber and hence air is pumped by the internal water surface to flow through a Wells turbine installed at the chamber top. The effect of the turbine is characterised as a linear power take–off (PTO) system. A semi–analytical model based on linear potential flow theory and the eigen–function expansion method is developed to solve the wave radiation and diffraction problems of the multi–OWC platform. The hydrodynamic coefficients evaluated with direct and indirect methods of the model are shown to be in excellent agreement, and the energy conservation relationship of the multi–OWC platform is satisfied. The validated model is then applied to predict wave motion, dynamic air pressure, wave power extraction, and wave reflection and transmission coefficients of the multi–OWC platform. The effects of the PTO strategies, the number of chambers, the overall platform dimensions and the relative dimensions of adjacent chambers on wave power extraction and wave attenuation are investigated. A smaller–draft front wall and a larger–draft back wall are found to be beneficial for broadening the range of high–efficiency performance of the platform. The same wave transmission coefficient can be obtained by two multi–OWC platforms with inverse geometric constructions. en
dc.description.sponsorship European Commission (Intelligent Community Energy (ICE), INTERREG V FCE, Contract No. 5025); State Key Laboratory of Coastal and Offshore Engineering (Open Research Fund Program LP1928); China Scholarship Council (Grant No. 201806060137) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Elsevier Ltd. en
dc.rights © 2020, Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC BY-NC-ND 4.0 license. en
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/ en
dc.subject Marine renewable energy en
dc.subject Oscillating water columns en
dc.subject Wave power extraction en
dc.subject Wave transmission en
dc.subject Potential flow theory en
dc.title Hydrodynamic performance of a multi-Oscillating Water Column (OWC) platform en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Jose Gregorio Iglesias Rodriguez, Enginering, University College Cork, Cork, Ireland. +353-21-490-3000 Email: gregorio.iglesias@ucc.ie en
dc.internal.availability Full text available en
dc.check.info Access to this article is restricted until 24 months after publication by request of the publisher. en
dc.check.date 2022-05-10
dc.date.updated 2020-05-11T09:05:40Z
dc.description.version Accepted Version en
dc.internal.rssid 513901964
dc.contributor.funder European Commission en
dc.contributor.funder State Key Laboratory of Coastal and Offshore Engineering en
dc.contributor.funder China Scholarship Council en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Applied Ocean Research en
dc.internal.copyrightchecked Yes
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress gregorio.iglesias@ucc.ie en
dc.identifier.articleid 102168 en
dc.internal.bibliocheck Check page range. Amend citation accordingly. en


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© 2020, Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC BY-NC-ND 4.0 license. Except where otherwise noted, this item's license is described as © 2020, Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC BY-NC-ND 4.0 license.
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