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Article: Mass transport in a two-layer wave boundary layer

TitleMass transport in a two-layer wave boundary layer
Authors
KeywordsDispersion coefficient
Homogenization method
Mass transport
Sediment suspension
Stokes boundary layer
Surface waves
Issue Date2001
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/oceaneng
Citation
Ocean Engineering, 2001, v. 28 n. 10, p. 1393-1411 How to Cite?
AbstractThe transport of a chemical species under the pure action of surface progressive waves in the benthic boundary layer which is loaded with dense suspended sediments is studied theoretically. The flow structure of the boundary layer is approximated by that of a two-layer Stokes boundary layer with a sharp interface between clear water and a heavy fluid. The simplest model of constant eddy diffusivities is adopted and the exchange of matter with the bed is ignored. For a thin layer of heavy fluid, whose thickness is comparable to the surface wave amplitude and the Stokes boundary layer thickness, effective transport equations are deduced using an averaging technique based on the method of homogenization. The effective advection velocity is found to be equal to the depth-averaged mass transport velocity, while the dispersion coefficient can be shown to be positive definite. Explicit expressions for the transport coefficients are obtained as functions of fluid properties and flow kinematics. Physical discussions on their relations are also presented. © 2001 Elsevier Science Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/75811
ISSN
2015 Impact Factor: 1.488
2015 SCImago Journal Rankings: 1.240
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorNg, COen_HK
dc.date.accessioned2010-09-06T07:14:47Z-
dc.date.available2010-09-06T07:14:47Z-
dc.date.issued2001en_HK
dc.identifier.citationOcean Engineering, 2001, v. 28 n. 10, p. 1393-1411en_HK
dc.identifier.issn0029-8018en_HK
dc.identifier.urihttp://hdl.handle.net/10722/75811-
dc.description.abstractThe transport of a chemical species under the pure action of surface progressive waves in the benthic boundary layer which is loaded with dense suspended sediments is studied theoretically. The flow structure of the boundary layer is approximated by that of a two-layer Stokes boundary layer with a sharp interface between clear water and a heavy fluid. The simplest model of constant eddy diffusivities is adopted and the exchange of matter with the bed is ignored. For a thin layer of heavy fluid, whose thickness is comparable to the surface wave amplitude and the Stokes boundary layer thickness, effective transport equations are deduced using an averaging technique based on the method of homogenization. The effective advection velocity is found to be equal to the depth-averaged mass transport velocity, while the dispersion coefficient can be shown to be positive definite. Explicit expressions for the transport coefficients are obtained as functions of fluid properties and flow kinematics. Physical discussions on their relations are also presented. © 2001 Elsevier Science Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/oceanengen_HK
dc.relation.ispartofOcean Engineeringen_HK
dc.subjectDispersion coefficienten_HK
dc.subjectHomogenization methoden_HK
dc.subjectMass transporten_HK
dc.subjectSediment suspensionen_HK
dc.subjectStokes boundary layeren_HK
dc.subjectSurface wavesen_HK
dc.titleMass transport in a two-layer wave boundary layeren_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0029-8018&volume=28 &issue=10&spage=1393&epage=1411&date=2001&atitle=Mass+transport+in+a+two-layer+wave+boundary+layeren_HK
dc.identifier.emailNg, CO:cong@hku.hken_HK
dc.identifier.authorityNg, CO=rp00224en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0029-8018(00)00057-3en_HK
dc.identifier.scopuseid_2-s2.0-0035805061en_HK
dc.identifier.hkuros68305en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035805061&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume28en_HK
dc.identifier.issue10en_HK
dc.identifier.spage1393en_HK
dc.identifier.epage1411en_HK
dc.identifier.isiWOS:000168798500006-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridNg, CO=7401705594en_HK

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