Sensitivity of OWC performance to air compressibility

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dc.contributor.author López, Iván
dc.contributor.author Carballo, Rodrigo
dc.contributor.author Taveira-Pinto, Francisco
dc.contributor.author Iglesias, Gregorio
dc.date.accessioned 2019-07-12T11:50:48Z
dc.date.available 2019-07-12T11:50:48Z
dc.date.issued 2019-06-20
dc.identifier.citation López, I., Carballo, R., Taveira-Pinto, F. and Iglesias, G. (2019) 'Sensitivity of OWC performance to air compressibility', Renewable Energy, 145, pp. 1334-1347. doi: 10.1016/j.renene.2019.06.076 en
dc.identifier.volume 145 en
dc.identifier.startpage 1334 en
dc.identifier.endpage 1347 en
dc.identifier.issn 0960-1481
dc.identifier.issn 1879-0682
dc.identifier.uri http://hdl.handle.net/10468/8154
dc.identifier.doi 10.1016/j.renene.2019.06.076 en
dc.description.abstract Air compressibility is often neglected in experimental work due to practical difficulties, even though it is known to affect the performance of OWC wave energy converters. The key question, of course, is to what extent. In this work the impact of air compressibility on the capture width ratio is thoroughly quantified by means of a comprehensive experimental campaign, with no fewer than 330 tests encompassing a wide range of wave conditions and levels of turbine-induced damping, and two experimental set-ups: one designed to account for air compressibility, the other to neglect it. This approach is complemented with the use of the RANS-based CFD model OpenFOAM® to calibrate the pressure-vs-flowrate curves, which enables the flowrate to be determined based on the pressure drop measurements from the physical model. We find that the errors that derive from disregarding air compressibility may lead to either under- or over-predictions of power output, and are highly dependent on the operating conditions, more specifically the wave conditions (sea state) and turbine-induced damping. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Elsevier Ltd. en
dc.relation.uri http://www.sciencedirect.com/science/article/pii/S0960148119309048
dc.rights © 2019, 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 Wave energy en
dc.subject Wave power en
dc.subject Oscillating water column en
dc.subject Physical modelling en
dc.subject CFD en
dc.subject Capture-width ratio en
dc.title Sensitivity of OWC performance to air compressibility en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Jose Gregorio Iglesias Rodriguez, School Of Enginering Office, 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 2021-06-20
dc.date.updated 2019-07-12T11:42:41Z
dc.description.version Accepted Version en
dc.internal.rssid 492533772
dc.contributor.funder Consellería de Cultura, Educación e Ordenación Universitaria, Xunta de Galicia en
dc.contributor.funder FP7 People: Marie-Curie Actions en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Renewable Energy en
dc.internal.copyrightchecked Yes
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress gregorio.iglesias@ucc.ie en
dc.relation.project info:eu-repo/grantAgreement/EC/FP7::SP3::PEOPLE/618556/EU/Wave Farm Impacts and Design/WAVEIMPACT en


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© 2019, 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 © 2019, Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC BY-NC-ND 4.0 license.
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