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Experimental study of an onshore dual chamber oscillating water column device

2024-05-15Journal article Restricted access
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dc.contributor.authorGadelho, Jorge
dc.contributor.authorRezanejad, Kourosh
dc.contributor.authorGuedes Soares, Carlos
dc.contributor.authorSantos, João Alfredo
dc.contributor.authorAnastas, Gael
dc.contributor.authorFortes, Conceição
dc.date.accessioned2024-11-11T15:23:48Z
dc.date.available2024-11-11T15:23:48Z
dc.date.issued2024-05-15
dc.description.abstractA wave flume is used to study a scaled model of a stepped bottom dual-chamber Oscillating Water Column (OWC) installed onshore. Compared to traditional single-chamber OWCs, the use of dual-chambers is expected to widen the range of sea states in which the OWC is more efficient, and the step, in front of the first chamber, boosts the capturing energy capacity of the device. The Power Take-Off (PTO) system is modelled as an air opening in the pneumatic chambers. Several experiments combining regular incident waves and PTO damping conditions are performed. Results of the amplitudes of the free surface elevations inside the chambers show that the device can amplify the incident wave amplitude up to 1.57 times in chamber 2. Results of the primary ef ficiency show that the device is highly dependent on the PTO damping characteristics and can reach around 40% for a wide range of wave periods. Results of the reflection analysis show that the reflection coefficient is also dependent on the PTO damping characteristics but remain lower than 0.6 for all the studied cases. Sloshing phenomenon (mostly in the cross-section direction) was observed for a wavelength close to the cross-section dimension, impacting negatively on the device pneumatic performance.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationGadelho JFM, Rezanejad K, Soares CG, Santos JÁ, Anastas G, Fortes CJEM. Experimental study of an onshore dual chamber oscillating water column device. Ocean Engineering. 2024; 300: 117240. https://doi.org/10.1016/j.oceaneng.2024.117240pt_PT
dc.identifier.doi10.1016/j.oceaneng.2024.117240pt_PT
dc.identifier.eissn1873-5258
dc.identifier.issn0029-8018
dc.identifier.urihttp://hdl.handle.net/10400.21/17877
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationHarbour protection with dual chamber oscillating water column devices
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0029801824005778pt_PT
dc.subjectoscillating water columnpt_PT
dc.subjectexperimentspt_PT
dc.subjectbreakwaterpt_PT
dc.subjectefficiency improvementpt_PT
dc.subjectreflection coefficientspt_PT
dc.titleExperimental study of an onshore dual chamber oscillating water column devicept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleHarbour protection with dual chamber oscillating water column devices
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FEME-REN%2F30866%2F2017/PT
oaire.citation.endPage16pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleOcean Engineeringpt_PT
oaire.citation.volume300pt_PT
oaire.fundingStream3599-PPCDT
person.familyNameGadelho
person.familyNameRezanejad
person.familyNameGuedes Soares
person.familyNameSantos
person.familyNameAnastas
person.familyNameFortes
person.givenNameJorge
person.givenNameKourosh
person.givenNameCarlos
person.givenNameJoão Alfredo
person.givenNameGael Patrice
person.givenNameConceição
person.identifierhttps://scholar.google.pt/citations?user=4rJJIVYAAAAJ&hl=en
person.identifier.ciencia-id5518-2805-551A
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person.identifier.ciencia-id6416-97C2-3C08
person.identifier.ciencia-id4015-6A49-F104
person.identifier.ciencia-idCB15-B6E3-B2DA
person.identifier.orcid0000-0002-8683-0907
person.identifier.orcid0000-0001-7182-7716
person.identifier.orcid0000-0002-8570-4263
person.identifier.orcid0000-0001-7216-9217
person.identifier.orcid0000-0002-9277-5094
person.identifier.orcid0000-0002-5503-7527
person.identifier.ridH-1140-2012
person.identifier.scopus-author-id55770316900
person.identifier.scopus-author-id56978160800
person.identifier.scopus-author-id57201831145
person.identifier.scopus-author-id56232954700
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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