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Article: Numerical simulation and experimental verification of particle coagulation dynamics for a pulsed input

TitleNumerical simulation and experimental verification of particle coagulation dynamics for a pulsed input
Authors
Issue Date2003
PublisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/jcis
Citation
Journal Of Colloid And Interface Science, 2003, v. 262 n. 1, p. 149-161 How to Cite?
AbstractMathematical simulation of particle coagulation dynamics was carried out using improved sectional modeling techniques for a system with a pulsed input of primary particles. The methodological improvement included the modification of the size density function based on a realistic assumption of particle size distributions, the application of a new and comprehensive curvilinear collision model, and special adjustment for the mass transfer of a doublet of particles that were very different in size. The simulation results demonstrated that the rectilinear model overpredicted the rate of particle coagulation and that the degree of overprediction increased as the particles increased in size and the system became more heterogeneous. The coagulation rate increased remarkably as the fractal dimension of the particle aggregates decreased. The curvilinear model and the fractal scaling relationship in place of the rectilinear model and the Euclidean sizing geometry are two important modifications to the conventional Smoluchowski modeling approach. However, both modifications, rather than only one of them, should be applied together to produce more accurate and realistic simulations of coagulation dynamics. As indicated by the simulation, the importance of fluid shear rate to particle coagulation is reduced according to the curvilinear model compared to that previously described with the rectilinear model. As particles increased in size, the role of shear rate in coagulation became even less significant according to the curvilinear view of particle collisions. The results of numerical simulations in terms of the evolution of particle size distributions compared reasonably well with the observations of the jar-test coagulation experiments, which suggested the applicability of the modeling system, including the modified curvilinear-fractal approach, established in the present study. © 2003 Elsevier Science (USA). All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/71004
ISSN
2015 Impact Factor: 3.782
2015 SCImago Journal Rankings: 1.126
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, XYen_HK
dc.contributor.authorZhang, JJen_HK
dc.date.accessioned2010-09-06T06:28:03Z-
dc.date.available2010-09-06T06:28:03Z-
dc.date.issued2003en_HK
dc.identifier.citationJournal Of Colloid And Interface Science, 2003, v. 262 n. 1, p. 149-161en_HK
dc.identifier.issn0021-9797en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71004-
dc.description.abstractMathematical simulation of particle coagulation dynamics was carried out using improved sectional modeling techniques for a system with a pulsed input of primary particles. The methodological improvement included the modification of the size density function based on a realistic assumption of particle size distributions, the application of a new and comprehensive curvilinear collision model, and special adjustment for the mass transfer of a doublet of particles that were very different in size. The simulation results demonstrated that the rectilinear model overpredicted the rate of particle coagulation and that the degree of overprediction increased as the particles increased in size and the system became more heterogeneous. The coagulation rate increased remarkably as the fractal dimension of the particle aggregates decreased. The curvilinear model and the fractal scaling relationship in place of the rectilinear model and the Euclidean sizing geometry are two important modifications to the conventional Smoluchowski modeling approach. However, both modifications, rather than only one of them, should be applied together to produce more accurate and realistic simulations of coagulation dynamics. As indicated by the simulation, the importance of fluid shear rate to particle coagulation is reduced according to the curvilinear model compared to that previously described with the rectilinear model. As particles increased in size, the role of shear rate in coagulation became even less significant according to the curvilinear view of particle collisions. The results of numerical simulations in terms of the evolution of particle size distributions compared reasonably well with the observations of the jar-test coagulation experiments, which suggested the applicability of the modeling system, including the modified curvilinear-fractal approach, established in the present study. © 2003 Elsevier Science (USA). All rights reserved.en_HK
dc.languageengen_HK
dc.publisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/jcisen_HK
dc.relation.ispartofJournal of Colloid and Interface Scienceen_HK
dc.subject.meshComputer Simulationen_HK
dc.subject.meshFlocculationen_HK
dc.subject.meshFractalsen_HK
dc.subject.meshModels, Theoreticalen_HK
dc.subject.meshParticle Sizeen_HK
dc.titleNumerical simulation and experimental verification of particle coagulation dynamics for a pulsed inputen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-9797&volume=262&spage=149&epage=161&date=2003&atitle=Numerical+simulation+and+experimental+verification+of+particle+coagulation+dynamics+for+a+pulsed+inputen_HK
dc.identifier.emailLi, XY:xlia@hkucc.hku.hken_HK
dc.identifier.authorityLi, XY=rp00222en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0021-9797(03)00194-2en_HK
dc.identifier.pmid16256591-
dc.identifier.scopuseid_2-s2.0-0037650221en_HK
dc.identifier.hkuros81120en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037650221&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume262en_HK
dc.identifier.issue1en_HK
dc.identifier.spage149en_HK
dc.identifier.epage161en_HK
dc.identifier.isiWOS:000183069100018-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLi, XY=26642887900en_HK
dc.identifier.scopusauthoridZhang, JJ=7601341506en_HK

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