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dc.contributor.authorRuju, A
dc.contributor.authorConley, Daniel
dc.contributor.authorMasselink, Gerd
dc.contributor.authorAustin, M
dc.contributor.authorPuleo, J
dc.contributor.authorLanckriet, T
dc.contributor.authorFoster, D
dc.date.accessioned2016-10-08T18:56:40Z
dc.date.available2016-10-08T18:56:40Z
dc.date.issued2016-07
dc.identifier.issn0378-3839
dc.identifier.issn1872-7379
dc.identifier.urihttp://hdl.handle.net/10026.1/6287
dc.description.abstract

This paper presents the results of a laboratory experiment of swash hydrodynamics on a coarse sand barrier beach backed by a lagoon. Boundary layer dynamics have been analyzed using the high-resolution near-bed velocities measured by Acoustic Doppler Velocity Profilers deployed in the swash zone. Swash events have been ensemble-averaged in order to study mean hydrodynamic patterns. A proposed velocity gradient criterion allowed identification of the boundary layer growth during the backwash phase, but it was unable to characterize boundary layer variability during uprush. Cross-shore velocity profiles were well represented by the logarithmic model for a large portion of the ensemble-averaged swash duration. Uprush and backwash logarithmic-estimated friction factors were of the same order of magnitude with a strong variability related to the boundary layer growth during the backwash. The momentum integral method provided smaller bed shear stresses than the logarithmic model, a result possibly related to either the assumptions involved in the momentum integral method or to an underestimation of the boundary layer thickness during uprush. A decrease of friction coefficients for increasing Reynolds numbers at the early backwash was observed. This behavior is consistent with traditional results for steady and uniform flows in a transitional regime.

dc.format.extent47-61
dc.languageen
dc.language.isoen
dc.publisherElsevier BV
dc.subjectSwash
dc.subjectBoundary layer
dc.subjectLaboratory experiments
dc.subjectLogarithmic model
dc.subjectMomentum integral model
dc.titleBoundary layer dynamics in the swash zone under large-scale laboratory conditions
dc.typejournal-article
dc.typeJournal Article
plymouth.author-urlhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000378454800005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008
plymouth.volume113
plymouth.publication-statusPublished
plymouth.journalCOASTAL ENGINEERING
dc.identifier.doi10.1016/j.coastaleng.2015.08.001
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Biological and Marine Sciences
plymouth.organisational-group/Plymouth/PRIMaRE Publications
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA07 Earth Systems and Environmental Sciences
plymouth.organisational-group/Plymouth/Research Groups
plymouth.organisational-group/Plymouth/Research Groups/Marine Institute
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
plymouth.organisational-group/Plymouth/Users by role/Researchers in ResearchFish submission
dcterms.dateAccepted2015-08-04
dc.rights.embargodate2017-07-01
dc.identifier.eissn1872-7379
dc.rights.embargoperiod12 months
rioxxterms.funderEPSRC
rioxxterms.identifier.projectProto-type Experiment of Sediment Transport in Shallow water
rioxxterms.versionofrecord10.1016/j.coastaleng.2015.08.001
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/under-embargo-all-rights-reserved
rioxxterms.licenseref.startdate2016-07
rioxxterms.typeJournal Article/Review
plymouth.funderProto-type Experiment of Sediment Transport in Shallow water::EPSRC


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