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Conference Paper: Dispersion of suspended particles in a wave boundary layer

TitleDispersion of suspended particles in a wave boundary layer
Authors
KeywordsDispersion
Viscoelastic mud
Wave boundary layer
Issue Date2007
PublisherISOPE.
Citation
Proceedings Of The International Offshore And Polar Engineering Conference, 2007, p. 2424-2431 How to Cite?
AbstractThis is an analytical study with an aim to show the effects of a viscoelastic muddy bottom on the wave-induced advection 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 advection velocity and dispersion coefficient are nonmonotonic 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 advection velocity as well. It is, however, also possible that, away from these resonant mud depths, the advection 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. Copyright © 2007 by The International Society of Offshore and Polar Engineers(ISOPE).
Persistent Identifierhttp://hdl.handle.net/10722/100389
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorNg, COen_HK
dc.contributor.authorWu, CHen_HK
dc.date.accessioned2010-09-25T19:08:06Z-
dc.date.available2010-09-25T19:08:06Z-
dc.date.issued2007en_HK
dc.identifier.citationProceedings Of The International Offshore And Polar Engineering Conference, 2007, p. 2424-2431en_HK
dc.identifier.issn1098-6189en_HK
dc.identifier.urihttp://hdl.handle.net/10722/100389-
dc.description.abstractThis is an analytical study with an aim to show the effects of a viscoelastic muddy bottom on the wave-induced advection 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 advection velocity and dispersion coefficient are nonmonotonic 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 advection velocity as well. It is, however, also possible that, away from these resonant mud depths, the advection 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. Copyright © 2007 by The International Society of Offshore and Polar Engineers(ISOPE).en_HK
dc.languageengen_HK
dc.publisherISOPE.en_HK
dc.relation.ispartofProceedings of the International Offshore and Polar Engineering Conferenceen_HK
dc.subjectDispersionen_HK
dc.subjectViscoelastic muden_HK
dc.subjectWave boundary layeren_HK
dc.titleDispersion of suspended particles in a wave boundary layeren_HK
dc.typeConference_Paperen_HK
dc.identifier.emailNg, CO:cong@hku.hken_HK
dc.identifier.authorityNg, CO=rp00224en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-36448951952en_HK
dc.identifier.hkuros129699en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-36448951952&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume, v. 3en_HK
dc.identifier.spage2424en_HK
dc.identifier.epage2431en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridNg, CO=7401705594en_HK
dc.identifier.scopusauthoridWu, CH=7501667513en_HK

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