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dc.contributor.authorRaby, AC
dc.contributor.authorJayaratne, R
dc.contributor.authorBredmose, H
dc.contributor.authorBullock, G
dc.date.accessioned2019-01-31T09:05:13Z
dc.date.issued2020-01-02
dc.identifier.issn0022-1686
dc.identifier.issn1814-2079
dc.identifier.urihttp://hdl.handle.net/10026.1/13258
dc.description.abstract

To better understand individual violent wave overtopping, of significance for coastal defence design, three breaking wave types (steep-fronted, plunging and broken) based on focused wave groups, were generated in laboratory and numerical models. High-speed video captured overtopping events and produced velocity vector maps by means of bubble image velocimetry (BIV). Results were compared with a numerical model based on a linear wave detection procedure and a two-phase incompressible Navier–Stokes-based solver. This novel approach revealed that the overtopping waves comprised an initial jet of 0.2 s duration, but dominated by quasi-steady flow. Whilst laboratory surface-elevation time-histories were highly repeatable, overtopping volume repeats were sensitive to the breaker type. Measured volumes were compared with: the numerical model (which over-predicted, but was reasonably accurate for steep-fronted waves); estimations based on BIV results (which provided very close agreement for the steep-fronted waves); and a weir-based analogy (which provided reasonable agreement, but always under-predicted).

dc.format.extent34-46
dc.languageen
dc.language.isoen
dc.publisherTaylor & Francis
dc.subjectBreaking waves
dc.subjectbubble image velocimetry
dc.subjectcoastal engineering
dc.subjectflow visualization and imaging
dc.subjectincompressible Navier-Stokes solver
dc.subjectlaboratory studies
dc.subjectviolent wave overtopping
dc.titleIndividual violent wave-overtopping events: behaviour and estimation
dc.typejournal-article
dc.typeArticle
plymouth.author-urlhttps://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000508914800003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008
plymouth.issue1
plymouth.volume58
plymouth.publisher-urlhttp://dx.doi.org/10.1080/00221686.2018.1555549
plymouth.publication-statusPublished
plymouth.journalJournal of Hydraulic Research
dc.identifier.doi10.1080/00221686.2018.1555549
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Admin Group - REF
plymouth.organisational-group/Plymouth/Admin Group - REF/REF Admin Group - FoSE
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Engineering, Computing and Mathematics
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA12 Engineering
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.dateAccepted2018-11-30
dc.rights.embargodate2019-2-2
dc.identifier.eissn1814-2079
dc.rights.embargoperiodNot known
rioxxterms.funderEngineering and Physical Sciences Research Council
rioxxterms.identifier.projectFundamentals of overtopping from individual violent water wave impacts
rioxxterms.versionofrecord10.1080/00221686.2018.1555549
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.typeJournal Article/Review
plymouth.funderFundamentals of overtopping from individual violent water wave impacts::Engineering and Physical Sciences Research Council


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