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dc.contributor.authorQi, Wen-Gang
dc.contributor.authorLi, Chang-Fei
dc.contributor.authorJeng, Dong-Sheng
dc.contributor.authorGao, Fu-Ping
dc.contributor.authorLiang, Zuodong
dc.date.accessioned2019-07-04T12:37:22Z
dc.date.available2019-07-04T12:37:22Z
dc.date.issued2019
dc.identifier.issn0378-3839
dc.identifier.doi10.1016/j.coastaleng.2019.02.006
dc.identifier.urihttp://hdl.handle.net/10072/384011
dc.description.abstractWaves are coexisting with currents in coastal zones; nevertheless, previous experimental studies for excess pore-pressure responses in a porous seabed were predominantly limited to the wave-only condition. In this study, the combined wave-current induced excess pore-pressures in a sandy seabed were experimentally simulated with a specially-designed flume, which can concurrently generate periodic waves and a following/opposing co-directional current. The effect of a current on the wave profile is firstly examined. The wave steepness is decreased by a following current, but enhanced by an opposing current. Flume observations indicate that, under combined wave-current loading, the wave-induced pore-pressure is increased for the following-current case, but reduced for the opposing-current case. Such wave-current combination effect becomes more significant for shorter wave periods. The variation trend of the excess pore-pressure distribution in the present flume observations is consistent with that of the existing analytical solutions. Nevertheless, due to the existence of wave and/or current boundary layer and non-lineartiy of wave-current interactions as indicated by the flume observations, certain deviations exist between the flume results for excess pore-pressure and the analytical solutions, which can not be ignored especially for the opposing-current case. The effects of the boundary layer on the combined wave-current induced pore-pressures in the seabed are further highlighted by supplementary numerical simulations. A favorable prediction by the analytical solution would be expected for following-current cases and smaller pore-pressure amplitudes would be obtained for opposing-current cases.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherELSEVIER SCIENCE BV
dc.relation.ispartofpagefrom89
dc.relation.ispartofpageto98
dc.relation.ispartofjournalCOASTAL ENGINEERING
dc.relation.ispartofvolume147
dc.subject.fieldofresearchCivil Engineering
dc.subject.fieldofresearchGeology
dc.subject.fieldofresearchOceanography
dc.subject.fieldofresearchcode0905
dc.subject.fieldofresearchcode0403
dc.subject.fieldofresearchcode0405
dc.titleCombined wave-current induced excess pore-pressure in a sandy seabed: Flume observations and comparisons with theoretical models
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorJeng, Dong-Sheng
gro.griffith.authorLiang, Zuodong


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