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Article: Chemical transport associated with discharge of contaminated fine particles to a steady open-channel flow

TitleChemical transport associated with discharge of contaminated fine particles to a steady open-channel flow
Authors
KeywordsPhysics
Issue Date2000
PublisherAmerican Institute of Physics. The Journal's web site is located at http://ojps.aip.org/phf
Citation
Physics Of Fluids, 2000, v. 12 n. 1, p. 136-144 How to Cite?
AbstractIn this paper, an analytical study on the advective-dispersive transport of a chemical contaminant resulting from the discharge of contaminated fine solid particles into a two-dimensional, steady and uniform turbulent open-channel flow is presented. Because of sorptive exchange, the transport of the chemical cloud is affected by that of the suspended particulates. Such a relationship has so far not been explicitly established by intuitive arguments. The effective transport equations are formally derived by an extended method of homogenization. It is found that over a long time scale the fall velocity will delay the sediment advection, and the advection velocity and dispersion coefficient for the chemical transport will change with space and time according to the local sediment concentration. Numerical results confirm that the centers of mass of the sediment and dissolved phase clouds are not advancing at the same speed, and the dispersion of the chemical is enhanced by the local retardation factor. © 2000 American Institute of Physics. [S1070-6631(00)01501-4].
Persistent Identifierhttp://hdl.handle.net/10722/42133
ISSN
2015 Impact Factor: 2.017
2015 SCImago Journal Rankings: 1.036
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorNg, COen_HK
dc.date.accessioned2007-01-08T02:29:54Z-
dc.date.available2007-01-08T02:29:54Z-
dc.date.issued2000en_HK
dc.identifier.citationPhysics Of Fluids, 2000, v. 12 n. 1, p. 136-144en_HK
dc.identifier.issn1070-6631en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42133-
dc.description.abstractIn this paper, an analytical study on the advective-dispersive transport of a chemical contaminant resulting from the discharge of contaminated fine solid particles into a two-dimensional, steady and uniform turbulent open-channel flow is presented. Because of sorptive exchange, the transport of the chemical cloud is affected by that of the suspended particulates. Such a relationship has so far not been explicitly established by intuitive arguments. The effective transport equations are formally derived by an extended method of homogenization. It is found that over a long time scale the fall velocity will delay the sediment advection, and the advection velocity and dispersion coefficient for the chemical transport will change with space and time according to the local sediment concentration. Numerical results confirm that the centers of mass of the sediment and dissolved phase clouds are not advancing at the same speed, and the dispersion of the chemical is enhanced by the local retardation factor. © 2000 American Institute of Physics. [S1070-6631(00)01501-4].en_HK
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dc.languageengen_HK
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://ojps.aip.org/phfen_HK
dc.relation.ispartofPhysics of Fluidsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPhysics of Fluids. Copyright © American Institute of Physics.en_HK
dc.subjectPhysicsen_HK
dc.titleChemical transport associated with discharge of contaminated fine particles to a steady open-channel flowen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1070-6631&volume=12&issue=1&spage=136&epage=144&date=2000&atitle=Chemical+transport+associated+with+discharge+of+contaminated+fine+particles+to+a+steady+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.doi10.1063/1.870289en_HK
dc.identifier.scopuseid_2-s2.0-0034040150en_HK
dc.identifier.hkuros48994-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0034040150&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume12en_HK
dc.identifier.issue1en_HK
dc.identifier.spage136en_HK
dc.identifier.epage144en_HK
dc.identifier.isiWOS:000084049000014-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridNg, CO=7401705594en_HK

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