Boundary layer dynamics in the swash zone under large-scale laboratory conditions
dc.contributor.author | Ruju, A | |
dc.contributor.author | Conley, Daniel | |
dc.contributor.author | Masselink, Gerd | |
dc.contributor.author | Austin, M | |
dc.contributor.author | Puleo, J | |
dc.contributor.author | Lanckriet, T | |
dc.contributor.author | Foster, D | |
dc.date.accessioned | 2016-10-08T18:56:40Z | |
dc.date.available | 2016-10-08T18:56:40Z | |
dc.date.issued | 2016-07 | |
dc.identifier.issn | 0378-3839 | |
dc.identifier.issn | 1872-7379 | |
dc.identifier.uri | http://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.extent | 47-61 | |
dc.language | en | |
dc.language.iso | en | |
dc.publisher | Elsevier BV | |
dc.subject | Swash | |
dc.subject | Boundary layer | |
dc.subject | Laboratory experiments | |
dc.subject | Logarithmic model | |
dc.subject | Momentum integral model | |
dc.title | Boundary layer dynamics in the swash zone under large-scale laboratory conditions | |
dc.type | journal-article | |
dc.type | Journal Article | |
plymouth.author-url | http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000378454800005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008 | |
plymouth.volume | 113 | |
plymouth.publication-status | Published | |
plymouth.journal | COASTAL ENGINEERING | |
dc.identifier.doi | 10.1016/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.dateAccepted | 2015-08-04 | |
dc.rights.embargodate | 2017-07-01 | |
dc.identifier.eissn | 1872-7379 | |
dc.rights.embargoperiod | 12 months | |
rioxxterms.funder | EPSRC | |
rioxxterms.identifier.project | Proto-type Experiment of Sediment Transport in Shallow water | |
rioxxterms.versionofrecord | 10.1016/j.coastaleng.2015.08.001 | |
rioxxterms.licenseref.uri | http://www.rioxx.net/licenses/under-embargo-all-rights-reserved | |
rioxxterms.licenseref.startdate | 2016-07 | |
rioxxterms.type | Journal Article/Review | |
plymouth.funder | Proto-type Experiment of Sediment Transport in Shallow water::EPSRC |