Modelling air compressibility in OWC devices with deformable air chambers

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dc.contributor.author Benreguig, Pierre
dc.contributor.author Murphy, Jimmy
dc.date.accessioned 2019-10-01T08:47:39Z
dc.date.available 2019-10-01T08:47:39Z
dc.date.issued 2019-08-11
dc.identifier.citation Benreguig, P. and Murphy, J. (2019) 'Modelling Air Compressibility in OWC Devices with Deformable Air Chambers', Journal of Marine Science and Engineering, 7(8), 268 (13pp). DOI: 10.3390/jmse7080268 en
dc.identifier.volume 7 en
dc.identifier.issued 8 en
dc.identifier.startpage 1 en
dc.identifier.endpage 13 en
dc.identifier.issn 2077-1312
dc.identifier.uri http://hdl.handle.net/10468/8650
dc.identifier.doi 10.3390/jmse7080268 en
dc.description.abstract Air compressibility effects play an important role in large-scale Oscillating Water Column (OWC) wave energy converters. Air compressibility is however not scalable with Froude similarity law. An existing scaling method enables correctly reproducing the air compressibility at the model scale, but its implementation is effortful and becomes cumbersome for floating devices and tests at relatively large scales (1/15th–1/2th). Air compressibility is therefore commonly ignored in model-scale tank testing of conventional OWC devices, which can lead to substantially unrealistic results on the device performance relative to the full-scale device. In the case of the Tupperwave device, which is a closed circuit OWC device, correctly modelling air compressibility during tank testing is however essential because the device relies on air compressibility to work. In this paper, a new method for modelling air compressibility at the model scale is presented. The method uses variable volume chambers, which mimic air compressibility by storing energy under the form of strain energy. This method reduces the difficulties of implementation and enhances the application of the existing method to larger scales. Various applications to this method are identified and described, including the presentation of a novel OWC concept. en
dc.description.sponsorship OCEANERA-NET European Network (OCN/00028) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher MDPI en
dc.relation.uri https://www.mdpi.com/2077-1312/7/8/268/htm
dc.rights © The Author(s) 2019. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited en
dc.rights.uri https://creativecommons.org/licenses/by/4.0/ en
dc.subject Wave energy en
dc.subject Oscillating war column en
dc.subject Air compressibility en
dc.subject Tank testing en
dc.subject Closed-circuit en
dc.subject Non-return valves en
dc.subject Spring-like effect en
dc.subject Deformable chambers en
dc.title Modelling air compressibility in OWC devices with deformable air chambers en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Pierre Benreguig, MaREI Centre, Beaufort building, University College Cork, Cork, Ireland. +353-21-490-3000 Email:pierre.benreguig@ucc.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.contributor.funder Horizon 2020 en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Journal of Marine Science Engineering en
dc.internal.IRISemailaddress pierre.benreguig@ucc.ie en
dc.identifier.articleid 268 en
dc.relation.project info:eu-repo/grantAgreement/EC/H2020::ERA-NET-Cofund/731200/EU/Ocean Energy ERA-NET Cofund/OCEANERA-NET COFUND en
dc.relation.project info:eu-repo/grantAgreement/EC/FP7::SP1::ENERGY/618099/EU/The coordination of national research activities of Member States and Associated States in the field of Ocean Energy (ERA-NET)/OCEANERA-NET en


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© The Author(s) 2019. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited Except where otherwise noted, this item's license is described as © The Author(s) 2019. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
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