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Article: Mass transport in a two-layer wave boundary layer
Title | Mass transport in a two-layer wave boundary layer |
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Authors | |
Keywords | Dispersion coefficient Homogenization method Mass transport Sediment suspension Stokes boundary layer Surface waves |
Issue Date | 2001 |
Publisher | Pergamon. 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? |
Abstract | The 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 Identifier | http://hdl.handle.net/10722/75811 |
ISSN | 2023 Impact Factor: 4.6 2023 SCImago Journal Rankings: 1.214 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ng, CO | en_HK |
dc.date.accessioned | 2010-09-06T07:14:47Z | - |
dc.date.available | 2010-09-06T07:14:47Z | - |
dc.date.issued | 2001 | en_HK |
dc.identifier.citation | Ocean Engineering, 2001, v. 28 n. 10, p. 1393-1411 | en_HK |
dc.identifier.issn | 0029-8018 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/75811 | - |
dc.description.abstract | The 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.language | eng | en_HK |
dc.publisher | Pergamon. The Journal's web site is located at http://www.elsevier.com/locate/oceaneng | en_HK |
dc.relation.ispartof | Ocean Engineering | en_HK |
dc.subject | Dispersion coefficient | en_HK |
dc.subject | Homogenization method | en_HK |
dc.subject | Mass transport | en_HK |
dc.subject | Sediment suspension | en_HK |
dc.subject | Stokes boundary layer | en_HK |
dc.subject | Surface waves | en_HK |
dc.title | Mass transport in a two-layer wave boundary layer | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://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+layer | en_HK |
dc.identifier.email | Ng, CO:cong@hku.hk | en_HK |
dc.identifier.authority | Ng, CO=rp00224 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/S0029-8018(00)00057-3 | en_HK |
dc.identifier.scopus | eid_2-s2.0-0035805061 | en_HK |
dc.identifier.hkuros | 68305 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0035805061&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 28 | en_HK |
dc.identifier.issue | 10 | en_HK |
dc.identifier.spage | 1393 | en_HK |
dc.identifier.epage | 1411 | en_HK |
dc.identifier.isi | WOS:000168798500006 | - |
dc.publisher.place | United Kingdom | en_HK |
dc.identifier.scopusauthorid | Ng, CO=7401705594 | en_HK |
dc.identifier.issnl | 0029-8018 | - |