A novel wave-energy device with enhanced wave amplification and induction actuator

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dc.contributor.authorBokhove, Onno
dc.contributor.authorKalogirou, Anna
dc.contributor.authorHenry, David
dc.contributor.authorThomas, Gareth P.
dc.contributor.funderEngineering and Physical Sciences Research Councilen
dc.date.accessioned2021-05-14T11:19:21Z
dc.date.available2021-05-14T11:19:21Z
dc.date.issued2019-09-01
dc.date.updated2021-05-10T19:35:02Z
dc.descriptionFirst special issue with articles emanating from the Thirteenth European Wave and Tidal Energy Conference (EWTEC2019) held in Naples, Italy from 1-6 September 2019.en
dc.description.abstractA novel wave-energy device is presented. Both a preliminary proof-of-principle of a working, scaled laboratory version of the energy device is shown as well as the derivation and analysis of a comprehensive mathematical and numerical model of the new device. The wave-energy device includes a convergence in which the waves are amplified, a constrained wave buoy with a (curved) mast and direct energy conversion of the buoy motion into electrical power via an electro-magnetic generator. The device is designed for use in breakwaters and it is possible to be taken out of action during severe weather. The new design is a deconstruction of elements of existing wave-energy devices, such as the TapChan, IP wave-buoy and the Berkeley Wedge, put together in a different manner to enhance energy conversion and, hence, efficiency. The idea of wave-focusing in a contraction emerged from our work on creating and simulating rogue waves in crossing seas, including a "bore-soliton-splash". Such crossing seas have been recreated and modelled in the laboratory and in simulations by using a geometric channel convergence. The mathematical and numerical modelling is also novel. One monolithic variational principle governs the dynamics including the combined (potential-flow) hydrodynamics, the buoy motion and the power generation, to which the dissipative elements such as the electrical resistance of the circuits, coils and loads have been added a posteriori. The numerical model is a direct and consistent discretisation of this comprehensive variational principle. Preliminary numerical calculations are shown for the case of linearised dynamics; optimisation of efficiency is a target of future work.en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationBokhove, O., Kalogirou, A., Henry, D., and Thomas, G. (2020). A novel wave-energy device with enhanced wave amplification and induction actuator, International Marine Energy Journal, 3 (1), pp. 37-44. doi: 10.36688/imej.3.37-44en
dc.identifier.doi10.36688/imej.3.37-44en
dc.identifier.endpage44en
dc.identifier.issn2631-5548
dc.identifier.issued1en
dc.identifier.journaltitleInternational Marine Energy Journalen
dc.identifier.startpage37en
dc.identifier.urihttps://hdl.handle.net/10468/11320
dc.identifier.volume3en
dc.language.isoenen
dc.publisherEuropean Wave and Tidal Energy Conference (EWTEC)en
dc.relation.projectinfo:eu-repo/grantAgreement/RCUK/EPSRC/EP/L025388/1/GB/FastFEM: Behaviour of fast ships in waves/en
dc.relation.urihttps://marineenergyjournal.org/imej/article/view/47
dc.rights© 2020 Onno Bokhove, Anna Kalogirou, David Henry, Gareth P. Thomas.This work is licensed under a Creative Commons Attribution 4.0 International License.en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectWater-wave focussingen
dc.subjectWave-energy buoyen
dc.subjectElectro-magnetic generatoren
dc.subjectMonolithic variational principleen
dc.subjectFinite-element modellingen
dc.titleA novel wave-energy device with enhanced wave amplification and induction actuatoren
dc.typeConference itemen
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