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Conference Paper: Investigation of the hydrodynamic behaviour of particles and aggregates by particle image velocimetry (PIV)

TitleInvestigation of the hydrodynamic behaviour of particles and aggregates by particle image velocimetry (PIV)
Authors
KeywordsAggregate
Flocculation
Hydrodynamics
Particle
Particle image velocimetry (PIV)
Permeability
Issue Date2007
PublisherI W A Publishing. The Journal's web site is located at http://www.iwapublishing.com/template.cfm?name=iwapwst_ws
Citation
Water Science And Technology: Water Supply, 2007, v. 7 n. 2, p. 213-220 How to Cite?
AbstractAn advanced fluid visualisation technique, particle image velocimetry, was employed to investigate the hydrodynamic properties of particles and aggregates. The experiments were conducted in a settling column filled with a suspension of fluorescent polymeric beads as flow tracers. A thin vertical section of the settling column was illuminated by a laser sheet, while the motions of particles were recorded by a high speed CCD camera. Large solid spheres, flocs of latex microspheres and aggregates of marine diatoms were characterised for their hydrodynamic properties. The trajectories of the tracer particles were tracked when a large particle or aggregate settled through the suspension of the tracers, which gave the streamlines surrounding the falling object. The streamlines demonstrate directly the curvilinear feature of the interaction between approaching particles. However, the available curvilinear model underestimates the collision frequency function of particles by one order of magnitude or two. The collision potentials of the flocs and aggregates are more than an order of magnitude greater than the similar-sized solid spheres. Algal aggregates appear to be highly porous and fractal with a fluid collection efficiency of 10-40%, which would significantly enhance the flocculation between particles and the mass transfer into the aggregates. © IWA Publishing 2007.
DescriptionProceedings of the International Symposium on Sustainable and Safe Water Supplies, Hong Kong, China, 15-17 January 2007.
Persistent Identifierhttp://hdl.handle.net/10722/129136
ISSN
2015 Impact Factor: 0.532
2015 SCImago Journal Rankings: 0.315
References

 

DC FieldValueLanguage
dc.contributor.authorXiao, Fen_HK
dc.contributor.authorLi, XYen_HK
dc.contributor.authorLam, KMen_HK
dc.date.accessioned2010-12-23T08:32:53Z-
dc.date.available2010-12-23T08:32:53Z-
dc.date.issued2007en_HK
dc.identifier.citationWater Science And Technology: Water Supply, 2007, v. 7 n. 2, p. 213-220en_HK
dc.identifier.issn1606-9749en_HK
dc.identifier.urihttp://hdl.handle.net/10722/129136-
dc.descriptionProceedings of the International Symposium on Sustainable and Safe Water Supplies, Hong Kong, China, 15-17 January 2007.-
dc.description.abstractAn advanced fluid visualisation technique, particle image velocimetry, was employed to investigate the hydrodynamic properties of particles and aggregates. The experiments were conducted in a settling column filled with a suspension of fluorescent polymeric beads as flow tracers. A thin vertical section of the settling column was illuminated by a laser sheet, while the motions of particles were recorded by a high speed CCD camera. Large solid spheres, flocs of latex microspheres and aggregates of marine diatoms were characterised for their hydrodynamic properties. The trajectories of the tracer particles were tracked when a large particle or aggregate settled through the suspension of the tracers, which gave the streamlines surrounding the falling object. The streamlines demonstrate directly the curvilinear feature of the interaction between approaching particles. However, the available curvilinear model underestimates the collision frequency function of particles by one order of magnitude or two. The collision potentials of the flocs and aggregates are more than an order of magnitude greater than the similar-sized solid spheres. Algal aggregates appear to be highly porous and fractal with a fluid collection efficiency of 10-40%, which would significantly enhance the flocculation between particles and the mass transfer into the aggregates. © IWA Publishing 2007.en_HK
dc.languageengen_US
dc.publisherI W A Publishing. The Journal's web site is located at http://www.iwapublishing.com/template.cfm?name=iwapwst_wsen_HK
dc.relation.ispartofWater Science and Technology: Water Supplyen_HK
dc.rightsWater Science and Technology: Water Supply. Copyright © I W A Publishing.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©IWA Publishing 2007. The definitive peer-reviewed and edited version of this article is published in Water Science and Technology: Water Supply, 2007, v. 7 n. 2, p. 213-220. DOI: 10.2166/ws.2007.056 and is available at www.iwapublishing.com-
dc.subjectAggregateen_HK
dc.subjectFlocculationen_HK
dc.subjectHydrodynamicsen_HK
dc.subjectParticleen_HK
dc.subjectParticle image velocimetry (PIV)en_HK
dc.subjectPermeabilityen_HK
dc.titleInvestigation of the hydrodynamic behaviour of particles and aggregates by particle image velocimetry (PIV)en_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1606-9749&volume=7&issue=2&spage=213&epage=220&date=2007&atitle=Investigation+of+the+hydrodynamic+behaviour+of+particles+and+aggregates+by+particle+image+velocimetry+(PIV)-
dc.identifier.emailLi, XY:xlia@hkucc.hku.hken_HK
dc.identifier.emailLam, KM:kmlam@hku.hken_HK
dc.identifier.authorityLi, XY=rp00222en_HK
dc.identifier.authorityLam, KM=rp00134en_HK
dc.description.naturepostprint-
dc.identifier.doi10.2166/ws.2007.056en_HK
dc.identifier.scopuseid_2-s2.0-34548153239en_HK
dc.identifier.hkuros177011en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34548153239&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume7en_HK
dc.identifier.issue2en_HK
dc.identifier.spage213en_HK
dc.identifier.epage220en_HK
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridXiao, F=7201709645en_HK
dc.identifier.scopusauthoridLi, XY=26642887900en_HK
dc.identifier.scopusauthoridLam, KM=7403656958en_HK

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