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Article: Effects of kinetic sorptive exchange on solute transport in open-channel flow

TitleEffects of kinetic sorptive exchange on solute transport in open-channel flow
Authors
KeywordsEngineering
Hydraulic engineering physics
Issue Date2001
PublisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=FLM
Citation
Journal Of Fluid Mechanics, 2001, v. 446, p. 321-345 How to Cite?
AbstractA theory is presented for the transport in open-channel flow of a chemical species under the influence of kinetic sorptive exchange between phases that are dissolved in water and sorbed onto suspended sediments. The asymptotic method of homogenization is followed to deduce effective transport equations for both phases. The transport coefficients for the solute are shown to be functions of the local sediment concentration and therefore vary with space and time. The three important controlling parameters are the suspension number, the bulk solid-water distribution ratio and the sorption kinetics parameter. It is illustrated with a numerical example that when values of these parameters are sufficiently high, the advection and dispersion of the solute cloud can be dominated by the sorption effects. The concentration distribution can exhibit an appreciable deviation from Gaussianity soon after discharge, which develops into a long tailing as the solute cloud gradually moves ahead of the sediment cloud.
Persistent Identifierhttp://hdl.handle.net/10722/42138
ISSN
2015 Impact Factor: 2.514
2015 SCImago Journal Rankings: 1.450
References

 

DC FieldValueLanguage
dc.contributor.authorNg, COen_HK
dc.contributor.authorYip, TLen_HK
dc.date.accessioned2007-01-08T02:30:00Z-
dc.date.available2007-01-08T02:30:00Z-
dc.date.issued2001en_HK
dc.identifier.citationJournal Of Fluid Mechanics, 2001, v. 446, p. 321-345en_HK
dc.identifier.issn0022-1120en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42138-
dc.description.abstractA theory is presented for the transport in open-channel flow of a chemical species under the influence of kinetic sorptive exchange between phases that are dissolved in water and sorbed onto suspended sediments. The asymptotic method of homogenization is followed to deduce effective transport equations for both phases. The transport coefficients for the solute are shown to be functions of the local sediment concentration and therefore vary with space and time. The three important controlling parameters are the suspension number, the bulk solid-water distribution ratio and the sorption kinetics parameter. It is illustrated with a numerical example that when values of these parameters are sufficiently high, the advection and dispersion of the solute cloud can be dominated by the sorption effects. The concentration distribution can exhibit an appreciable deviation from Gaussianity soon after discharge, which develops into a long tailing as the solute cloud gradually moves ahead of the sediment cloud.en_HK
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dc.languageengen_HK
dc.publisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=FLMen_HK
dc.relation.ispartofJournal of Fluid Mechanicsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsJournal of Fluid Mechanics. Copyright © Cambridge University Press.en_HK
dc.subjectEngineeringen_HK
dc.subjectHydraulic engineering physicsen_HK
dc.titleEffects of kinetic sorptive exchange on solute transport in open-channel flowen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0022-1120&volume=446&issue=1&spage=321&epage=345&date=2001&atitle=Effects+of+kinetic+sorptive+exchange+on+solute+transport+in+open-channel+flowen_HK
dc.identifier.emailNg, CO:cong@hku.hken_HK
dc.identifier.authorityNg, CO=rp00224en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1017/S0022112001005791en_HK
dc.identifier.scopuseid_2-s2.0-0035841469en_HK
dc.identifier.hkuros68306-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035841469&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume446en_HK
dc.identifier.spage321en_HK
dc.identifier.epage345en_HK
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridNg, CO=7401705594en_HK
dc.identifier.scopusauthoridYip, TL=7004283954en_HK

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