Suspension of sediment particles over a ripple due to turbulent convection under unsteady flow conditions SCIE SCOPUS KCI

DC Field Value Language
dc.contributor.author Chang, Yeon S. -
dc.contributor.author Park, Young-Gyu -
dc.date.accessioned 2020-04-20T02:40:31Z -
dc.date.available 2020-04-20T02:40:31Z -
dc.date.created 2020-01-28 -
dc.date.issued 2016-03 -
dc.identifier.issn 1738-5261 -
dc.identifier.uri https://sciwatch.kiost.ac.kr/handle/2020.kiost/2229 -
dc.description.abstract We analyzed the motions of small sediment particles over a sinusoidal ripple due to an unsteady turbulent boundary layer flow using Large Eddy Simulation. The motions of sediment particles are described in terms of the Lagrangian framework as it is helpful in studying the structure of sediment suspension in detail. Strong coherent vortical structures are well developed along the upslope of the ripple surface during the accelerating flow phase, which effectively drag the particles to the ripple crest. At the maximum flow rate and at the decelerating flow phase, a cloud of vortical structures is developed vertically in the lee area of the ripple. Sediment particles render strong dispersion in the vertical direction when they are captured by these turbulent vortices, causing convective sediment flux that cannot be explained by the mean flows. The convective sediment suspension is strongest at the time of flow deceleration, while over a flat bed at the time of flow reversal. This observation suggests that bed form effect should be considered in modeling convective sediment flux. -
dc.description.uri 1 -
dc.language English -
dc.publisher KOREA OCEAN RESEARCH DEVELOPMENT INST -
dc.subject LARGE-EDDY SIMULATION -
dc.subject OSCILLATORY FLOW -
dc.subject BOUNDARY-LAYERS -
dc.subject NUMERICAL-SIMULATION -
dc.subject CHANNEL FLOW -
dc.subject TRANSPORT -
dc.subject WAVES -
dc.title Suspension of sediment particles over a ripple due to turbulent convection under unsteady flow conditions -
dc.type Article -
dc.citation.endPage 135 -
dc.citation.startPage 127 -
dc.citation.title OCEAN SCIENCE JOURNAL -
dc.citation.volume 51 -
dc.citation.number 1 -
dc.contributor.alternativeName 장연식 -
dc.contributor.alternativeName 박영규 -
dc.identifier.bibliographicCitation OCEAN SCIENCE JOURNAL, v.51, no.1, pp.127 - 135 -
dc.identifier.doi 10.1007/s12601-016-0011-2 -
dc.identifier.scopusid 2-s2.0-84962143986 -
dc.identifier.wosid 000373381800011 -
dc.type.docType Article -
dc.identifier.kciid ART002090104 -
dc.description.journalClass 1 -
dc.subject.keywordPlus LARGE-EDDY SIMULATION -
dc.subject.keywordPlus OSCILLATORY FLOW -
dc.subject.keywordPlus BOUNDARY-LAYERS -
dc.subject.keywordPlus NUMERICAL-SIMULATION -
dc.subject.keywordPlus CHANNEL FLOW -
dc.subject.keywordPlus TRANSPORT -
dc.subject.keywordPlus WAVES -
dc.subject.keywordAuthor sediment transport -
dc.subject.keywordAuthor sediment suspension model -
dc.subject.keywordAuthor turbulent structures -
dc.subject.keywordAuthor ripple -
dc.subject.keywordAuthor convective sediment motion -
dc.subject.keywordAuthor Lagrangian particle motion -
dc.subject.keywordAuthor large eddy simulation -
dc.relation.journalWebOfScienceCategory Marine & Freshwater Biology -
dc.relation.journalWebOfScienceCategory Oceanography -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.description.journalRegisteredClass kci -
dc.relation.journalResearchArea Marine & Freshwater Biology -
dc.relation.journalResearchArea Oceanography -
Appears in Collections:
Ocean Climate Solutions Research Division > Ocean Circulation & Climate Research Department > 1. Journal Articles
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