Tupperwave-preliminary numerical modelling of a floating OWC equipped with a unidirectional turbine

dc.contributor.authorVicente, Miguel
dc.contributor.authorBenreguig, Pierre
dc.contributor.authorCrowley, Sarah
dc.contributor.authorMurphy, Jimmy
dc.contributor.funderHorizon 2020en
dc.date.accessioned2020-01-29T11:28:40Z
dc.date.available2020-01-29T11:28:40Z
dc.date.issued2017
dc.date.updated2020-01-29T11:07:38Z
dc.description.abstractThe TUPPERWAVE project is supported by the European Commission's OceanEraNet program. It aims to design and validate an innovative Oscillating Water Column (OWC) Power Take-Off (PTO) concept at laboratory scale. A conventional OWC typically generates a highly fluctuating bidirectional air flow through a self-rectifying turbine. To reduce the pneumatic power fluctuations through the turbine and the acoustic impact and ultimately increase the device efficiency, the TUPPERWAVE concept generates unidirectional air flow in a closed circuit, which can be converted into electricity via a conventional, high efficiency, unidirectional turbine. The principle is based on the use of a pair of non-return valves, two additional chambers above the water column and a unidirectional turbine harnessing energy from the resulting air flow between the two chambers. The concept was adapted to a floating axisymmetric structure. Numerical time-domain models have been developed by UCC and WavEC to determine the deviceĆ¢ s primary conversion from hydrodynamic to pneumatic power. Comparison of the output from the two models showed good agreement and allowed an initial optimization of the PTO main design parameters. A set of design parameters were chosen which maximize the pneumatic average power output flowing through the turbine whilst minimizing the power fluctuations, in regular and irregular sea states. When compared to a conventional OWC with the same structure geometry, the optimised Tupperwave device was shown to produce similar pneumatic average power with much lower fluctuations.en
dc.description.sponsorshipHorizon 2020 (OCEANERA-NET European Network OCN/00028)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationVicente, M.,Benreguig, P., Crowley, S. and Murphy, J. (2017) 'Tupperwave-preliminary numerical modelling of a floating OWC equipped with a unidirectional turbine', Proceedings of 12th European Wave and Tidal Energy Conference (EWTEC), Cork, 27 August-1 September.en
dc.identifier.endpage10en
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/9579
dc.language.isoenen
dc.publisherEuropean Wave and Tidal Energy Conference (EWTEC)en
dc.relation.urihttps://ewtec.org/proceedings/
dc.relation.urihttps://ewtec.org/ewtec-2017/
dc.rightsĀ© 2017, European Wave and Tidal Energy Conference (EWTEC). All rights reserved.en
dc.subjectUnidirectional turbineen
dc.subjectNumerical modellingen
dc.subjectOptimizationen
dc.subjectWave energy converteren
dc.subjectOscillating water columnen
dc.titleTupperwave-preliminary numerical modelling of a floating OWC equipped with a unidirectional turbineen
dc.typeConference itemen
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