Please use this identifier to cite or link to this item: http://repositorio.lnec.pt:8080/jspui/handle/123456789/1014938
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dc.contributor.authorWiener G.F.pt_BR
dc.contributor.authorTeixeira, P.pt_BR
dc.contributor.authorDidier, E.pt_BR
dc.date.accessioned2022-05-09T14:43:44Zpt_BR
dc.date.accessioned2022-05-12T08:45:08Z-
dc.date.available2022-05-09T14:43:44Zpt_BR
dc.date.available2022-05-12T08:45:08Z-
dc.date.issued2022-05pt_BR
dc.identifier.citationDOI: 10.1061/(ASCE)WW.1943-5460.0000713pt_BR
dc.identifier.issn1943-5460pt_BR
dc.identifier.urihttp://repositorio.lnec.pt:8080/jspui/handle/123456789/1014938-
dc.description.abstractThis paper describes a numerical evaluation of optimal sizes of a Wells turbine and chamber cross section to be used in a cluster of an oscillating water column (OWC) wave energy converter device. The FLUENT numerical model, based on the Reynolds–averaged Navier–Stokes equations and the volume of fluid technique, is used for modeling hydrodynamic and aerodynamic flows. Two new methods are developed for diminishing the computational cost: the generalized–TDO (turbine diameter optimization) model and the HAS (hydro-aerodynamic similarity) model. The generalized–TDO model is developed to determine the optimal turbine diameter for an OWC chamber with a square cross section. The analytical HAS model employs a similitude method to extend results obtained for a square cross section of the OWC chamber to a rectangular one. The optimal length, B, and width, W, of the chambers and turbine diameter, D, chosen by taking into account the southern Brazilian wave climate, were B ×W=15 × 15 m2 and D=2.75 to 3.00 m and 20 × 20 m2 and D=3.25 to 3.50 m, with efficiencies of 51% and 49%, respectively. Same optimal annual efficiency can be obtained for rectangular cross-section chambers 15 ×W and 20 ×W by using an adequate turbine diameter defined by the HAS model.pt_BR
dc.language.isoengpt_BR
dc.publisherASCEpt_BR
dc.rightsrestrictedAccesspt_BR
dc.subjectWave energypt_BR
dc.subjectOscillating water columnpt_BR
dc.subjectRANSpt_BR
dc.subjectTurbine size optimizationpt_BR
dc.subjectGeneralized–TDO modept_BR
dc.titleNumerical evaluation of optimal sizes of wells turbine and chamber of a cluster of oscillating water columns integrated into a breakwater on the southern Brazilian coastpt_BR
dc.typeworkingPaperpt_BR
dc.description.volumeVol. 148, Issue 4pt_BR
dc.description.sectorDHA/NPEpt_BR
dc.description.magazineJournal of Waterway, Port, Coastal, and Ocean Engineeringpt_BR
dc.contributor.peer-reviewedSIMpt_BR
dc.contributor.academicresearchersSIMpt_BR
dc.contributor.arquivoNAOpt_BR
Appears in Collections:DHA/NPE - Comunicações a congressos e artigos de revista

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