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Article: Dispersion in open-channel flow subject to the processes of sorptive exchange on the bottom and air-water exchange on the free surface* * Project supported by the Hong Kong Research Grants Council (Project Nos: HKU 7081/02E, HKU 7199/03E).

TitleDispersion in open-channel flow subject to the processes of sorptive exchange on the bottom and air-water exchange on the free surface* * Project supported by the Hong Kong Research Grants Council (Project Nos: HKU 7081/02E, HKU 7199/03E).
Authors
KeywordsEnvironmental Transport Processes
Homogenization Method
Taylor Dispersion
Issue Date2006
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/wps/find/journaldescription.cws_home/709740/description#description
Citation
Journal Of Hydrodynamics, 2006, v. 18 n. 3 SUPPL., p. 57-64 How to Cite?
AbstractAn analytical study is presented of dispersion in steady and oscillatory open-channel flow under the combined effects due to reversible sorptive phase exchange with the bed and irreversible air-Cwater exchange on the free surface. The free-surface reaction is assumed to be so weak that the asymptotic mean concentration can be developed well before undue substantial loss to the air occurs. The effective advection-Cdispersion transport equation, which is derived using a multiple-scale homogenization technique, contains formal expressions for the various components of the dispersion coefficient arising from the two chemical effects. Numerical calculations demonstrate that, as long as the bed is sorbing, the kinetics of the sorptive exchange plays a key role in controlling the overall dispersion mechanism. The otherwise weak effects of the free-surface loss can be significantly enhanced by the presence of kinetic phase exchange on the bottom. © 2006 Publishing House for Journal of Hydrodynamics.
Persistent Identifierhttp://hdl.handle.net/10722/156891
ISSN
2015 Impact Factor: 0.776
2015 SCImago Journal Rankings: 0.600
ISI Accession Number ID
Funding AgencyGrant Number
Hong Kong Research Grants CouncilHKU 7081/02E
HKU 7199/03E
Funding Information:

Project supported by the Hong Kong Research Grants Council (Project Nos: HKU 7081/02E, HKU 7199/03E).

References
Grants

 

DC FieldValueLanguage
dc.contributor.authorNg, Coen_US
dc.date.accessioned2012-08-08T08:44:26Z-
dc.date.available2012-08-08T08:44:26Z-
dc.date.issued2006en_US
dc.identifier.citationJournal Of Hydrodynamics, 2006, v. 18 n. 3 SUPPL., p. 57-64en_US
dc.identifier.issn1001-6058en_US
dc.identifier.urihttp://hdl.handle.net/10722/156891-
dc.description.abstractAn analytical study is presented of dispersion in steady and oscillatory open-channel flow under the combined effects due to reversible sorptive phase exchange with the bed and irreversible air-Cwater exchange on the free surface. The free-surface reaction is assumed to be so weak that the asymptotic mean concentration can be developed well before undue substantial loss to the air occurs. The effective advection-Cdispersion transport equation, which is derived using a multiple-scale homogenization technique, contains formal expressions for the various components of the dispersion coefficient arising from the two chemical effects. Numerical calculations demonstrate that, as long as the bed is sorbing, the kinetics of the sorptive exchange plays a key role in controlling the overall dispersion mechanism. The otherwise weak effects of the free-surface loss can be significantly enhanced by the presence of kinetic phase exchange on the bottom. © 2006 Publishing House for Journal of Hydrodynamics.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/wps/find/journaldescription.cws_home/709740/description#descriptionen_US
dc.relation.ispartofJournal of Hydrodynamicsen_US
dc.subjectEnvironmental Transport Processesen_US
dc.subjectHomogenization Methoden_US
dc.subjectTaylor Dispersionen_US
dc.titleDispersion in open-channel flow subject to the processes of sorptive exchange on the bottom and air-water exchange on the free surface* * Project supported by the Hong Kong Research Grants Council (Project Nos: HKU 7081/02E, HKU 7199/03E).en_US
dc.typeArticleen_US
dc.identifier.emailNG, Co:cong@hku.hken_US
dc.identifier.authorityNG, Co=rp00224en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/S1001-6058(06)60031-0en_US
dc.identifier.scopuseid_2-s2.0-34247251269en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34247251269&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume18en_US
dc.identifier.issue3 SUPPL.en_US
dc.identifier.spage57en_US
dc.identifier.epage64en_US
dc.identifier.isiWOS:000208248700011-
dc.publisher.placeNetherlandsen_US
dc.relation.projectDispersion of a chemical species subject to sorptive exchange in a wave boundary layer-
dc.relation.projectNonlinear interaction between surface gravity waves and non-Newtonian fluid mud-
dc.identifier.scopusauthoridNG, Co=7401705594en_US

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