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Article: Dispersion of suspended particles in a wave boundary layer over a viscoelastic bed

TitleDispersion of suspended particles in a wave boundary layer over a viscoelastic bed
Authors
KeywordsDispersion
Homogenization method
Viscoelastic mud
Wave boundary layer
Issue Date2008
PublisherElsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/ijengsci
Citation
International Journal Of Engineering Science, 2008, v. 46 n. 1, p. 50-65 How to Cite?
AbstractThis is an analytical study with an aim to show the effects of a viscoelastic muddy bottom on the wave-induced convection and dispersion of a dilute suspension in the wave boundary layer above the viscoelastic bottom. It is shown that, depending on the rheology of the mud, the convection velocity and dispersion coefficient are non-monotonic functions of the thickness of the mud layer. When the elasticity dominates, appreciable resonant amplification of the mud motion can happen to a layer of certain thickness, which may lead to an order of magnitude increase in the dispersion coefficient and a negative convection velocity as well. It is, however, also possible that, away from these resonant mud depths, the convection velocity and dispersion coefficient are diminished, even to the extent to become virtually zero. All these transport phenomena are related to the oscillatory movement of the water-mud interface, in terms of phase and amplitude, relative to the movement of the near-bottom water particles. © 2007 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/75682
ISSN
2015 Impact Factor: 3.165
2015 SCImago Journal Rankings: 1.916
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorNg, COen_HK
dc.contributor.authorWu, CHen_HK
dc.date.accessioned2010-09-06T07:13:32Z-
dc.date.available2010-09-06T07:13:32Z-
dc.date.issued2008en_HK
dc.identifier.citationInternational Journal Of Engineering Science, 2008, v. 46 n. 1, p. 50-65en_HK
dc.identifier.issn0020-7225en_HK
dc.identifier.urihttp://hdl.handle.net/10722/75682-
dc.description.abstractThis is an analytical study with an aim to show the effects of a viscoelastic muddy bottom on the wave-induced convection and dispersion of a dilute suspension in the wave boundary layer above the viscoelastic bottom. It is shown that, depending on the rheology of the mud, the convection velocity and dispersion coefficient are non-monotonic functions of the thickness of the mud layer. When the elasticity dominates, appreciable resonant amplification of the mud motion can happen to a layer of certain thickness, which may lead to an order of magnitude increase in the dispersion coefficient and a negative convection velocity as well. It is, however, also possible that, away from these resonant mud depths, the convection velocity and dispersion coefficient are diminished, even to the extent to become virtually zero. All these transport phenomena are related to the oscillatory movement of the water-mud interface, in terms of phase and amplitude, relative to the movement of the near-bottom water particles. © 2007 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/ijengscien_HK
dc.relation.ispartofInternational Journal of Engineering Scienceen_HK
dc.rightsInternational Journal of Engineering Science. Copyright © Elsevier Inc.en_HK
dc.subjectDispersionen_HK
dc.subjectHomogenization methoden_HK
dc.subjectViscoelastic muden_HK
dc.subjectWave boundary layeren_HK
dc.titleDispersion of suspended particles in a wave boundary layer over a viscoelastic beden_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0020-7225&volume=46&issue=1&spage=50–65&epage=&date=2008&atitle=Dispersion+of+suspended+particles+in+a+wave+boundary+layer+over+a+viscoelastic+beden_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/j.ijengsci.2007.08.004en_HK
dc.identifier.scopuseid_2-s2.0-35748957197en_HK
dc.identifier.hkuros138571en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-35748957197&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume46en_HK
dc.identifier.issue1en_HK
dc.identifier.spage50en_HK
dc.identifier.epage65en_HK
dc.identifier.isiWOS:000253094500004-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridNg, CO=7401705594en_HK
dc.identifier.scopusauthoridWu, CH=7501667513en_HK

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