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Article: A deterministic Lagrangian particle separation-based method for advective-diffusion problems

TitleA deterministic Lagrangian particle separation-based method for advective-diffusion problems
Authors
KeywordsAdvective-diffusion
Ecological model
Lagrangian particle model
Particle separation
Relative diffusion
Issue Date2008
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/cnsns
Citation
Communications In Nonlinear Science And Numerical Simulation, 2008, v. 13 n. 10, p. 2071-2090 How to Cite?
AbstractA simple and robust Lagrangian particle scheme is proposed to solve the advective-diffusion transport problem. The scheme is based on relative diffusion concepts and simulates diffusion by regulating particle separation. This new approach generates a deterministic result and requires far less number of particles than the random walk method. For the advection process, particles are simply moved according to their velocity. The general scheme is mass conservative and is free from numerical diffusion. It can be applied to a wide variety of advective-diffusion problems, but is particularly suited for ecological and water quality modelling when definition of particle attributes (e.g., cell status for modelling algal blooms or red tides) is a necessity. The basic derivation, numerical stability and practical implementation of the NEighborhood Separation Technique (NEST) are presented. The accuracy of the method is demonstrated through a series of test cases which embrace realistic features of coastal environmental transport problems. Two field application examples on the tidal flushing of a fish farm and the dynamics of vertically migrating marine algae are also presented. © 2007 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/58545
ISSN
2015 Impact Factor: 2.834
2015 SCImago Journal Rankings: 1.575
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorWong, KTMen_HK
dc.contributor.authorLee, JHWen_HK
dc.contributor.authorChoi, KWen_HK
dc.date.accessioned2010-05-31T03:32:17Z-
dc.date.available2010-05-31T03:32:17Z-
dc.date.issued2008en_HK
dc.identifier.citationCommunications In Nonlinear Science And Numerical Simulation, 2008, v. 13 n. 10, p. 2071-2090en_HK
dc.identifier.issn1007-5704en_HK
dc.identifier.urihttp://hdl.handle.net/10722/58545-
dc.description.abstractA simple and robust Lagrangian particle scheme is proposed to solve the advective-diffusion transport problem. The scheme is based on relative diffusion concepts and simulates diffusion by regulating particle separation. This new approach generates a deterministic result and requires far less number of particles than the random walk method. For the advection process, particles are simply moved according to their velocity. The general scheme is mass conservative and is free from numerical diffusion. It can be applied to a wide variety of advective-diffusion problems, but is particularly suited for ecological and water quality modelling when definition of particle attributes (e.g., cell status for modelling algal blooms or red tides) is a necessity. The basic derivation, numerical stability and practical implementation of the NEighborhood Separation Technique (NEST) are presented. The accuracy of the method is demonstrated through a series of test cases which embrace realistic features of coastal environmental transport problems. Two field application examples on the tidal flushing of a fish farm and the dynamics of vertically migrating marine algae are also presented. © 2007 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/cnsnsen_HK
dc.relation.ispartofCommunications in Nonlinear Science and Numerical Simulationen_HK
dc.rightsCommunications in Nonlinear Science and Numerical Simulation. Copyright © Elsevier BV.en_HK
dc.subjectAdvective-diffusionen_HK
dc.subjectEcological modelen_HK
dc.subjectLagrangian particle modelen_HK
dc.subjectParticle separationen_HK
dc.subjectRelative diffusionen_HK
dc.titleA deterministic Lagrangian particle separation-based method for advective-diffusion problemsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1007-5704&volume=13&spage=2071&epage=2090&date=2008&atitle=A+Deterministic+Lagrangian+Particle+Separation-based+Method+For+Advective-diffusion+Problemsen_HK
dc.identifier.emailWong, KTM: ken0wong@hku.hken_HK
dc.identifier.emailLee, JHW: hreclhw@hku.hken_HK
dc.identifier.emailChoi, KW: choidkw@hkucc.hku.hken_HK
dc.identifier.authorityWong, KTM=rp00073en_HK
dc.identifier.authorityLee, JHW=rp00061en_HK
dc.identifier.authorityChoi, KW=rp00107en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.cnsns.2007.05.021en_HK
dc.identifier.scopuseid_2-s2.0-43049165522en_HK
dc.identifier.hkuros148623en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-43049165522&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume13en_HK
dc.identifier.issue10en_HK
dc.identifier.spage2071en_HK
dc.identifier.epage2090en_HK
dc.identifier.isiWOS:000256612400003-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridWong, KTM=24315177100en_HK
dc.identifier.scopusauthoridLee, JHW=36078318900en_HK
dc.identifier.scopusauthoridChoi, KW=25627214800en_HK

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