Please use this identifier to cite or link to this item: http://repositorio.lnec.pt:8080/jspui/handle/123456789/1009453
Full metadata record
DC FieldValueLanguage
dc.contributor.authorBrito, M.pt_BR
dc.contributor.authorFernandes, J. N.pt_BR
dc.contributor.authorLeal, J. B.pt_BR
dc.date.accessioned2017-04-27T15:56:37Zpt_BR
dc.date.accessioned2017-08-09T09:57:06Z-
dc.date.available2017-04-27T15:56:37Zpt_BR
dc.date.available2017-08-09T09:57:06Z-
dc.date.issued2016-12pt_BR
dc.identifier.citation10.1007/s10652-016-9481-0pt_BR
dc.identifier.urihttp://dspace2.lnec.pt:8080/jspui/handle/123456789/1009453pt_BR
dc.identifier.urihttp://repositorio.lnec.pt:8080/jspui/handle/123456789/1009453-
dc.description.abstractThe main goal of this study is the 3D numerical simulation of river flows with submerged vegetated floodplains. Since, vegetation layers are usually dense and present a large spatial heterogeneity they are here represented as a porous media. Standard semiempirical relations drawn for porous beds packed with non-spherical particles are used to estimate the porous media parameters based on the averaged geometry of the vegetation elements. Thus, eliminating the uncertainty arising from a bulk drag coefficient approach and allowing the use of a coarser mesh. The free flow is described by Reynolds-averaged Navier–Stokes (RANS) equations, whereas the porous media flow is described by the volumetric-average of RANS equations. The volume-of-fluid method and an anisotropic explicit algebraic Reynolds stress model are used for free-surface and turbulence closure, respectively. The simulation approach is validated against results by other authors featuring vegetated flows in horizontal and rectangular open-channel. The computed results show that the time-averaged streamwise velocity and Reynolds shear stress vertical profiles are properly simulated. The validated approach was applied to simulate compound openchannel flows with submerged vegetated floodplains and compared with data obtained in an experimental facility. The results show that the proposed porous media approach is adequate to simulate flows with submerged vegetation on the floodplains.pt_BR
dc.language.isoengpt_BR
dc.publisherSpringerpt_BR
dc.rightsopenAccesspt_BR
dc.subjectCompound open-channelpt_BR
dc.subjectSubmerged vegetationpt_BR
dc.subjectPorous mediapt_BR
dc.subjectEARSMpt_BR
dc.subjectMixing-layerpt_BR
dc.titlePorous media approach for RANS simulation of compound open-channel flows with submerged vegetated floodplainspt_BR
dc.typearticlept_BR
dc.description.pages1247–1266pppt_BR
dc.description.volumeVolume 16, Issue 6pt_BR
dc.description.sectorDHA/NREpt_BR
dc.description.magazineEnvironmental Fluid Mechanicspt_BR
dc.contributor.peer-reviewedNAOpt_BR
dc.contributor.academicresearchersNAOpt_BR
dc.contributor.arquivoNAOpt_BR
Appears in Collections:DHA/NRE - Comunicações a congressos e artigos de revista

Files in This Item:
File Description SizeFormat 
Fernandes1.pdf175.59 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.