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Article: A deterministic Lagrangian particle separation-based method for advective-diffusion problems
Title | A deterministic Lagrangian particle separation-based method for advective-diffusion problems |
---|---|
Authors | |
Keywords | Advective-diffusion Ecological model Lagrangian particle model Particle separation Relative diffusion |
Issue Date | 2008 |
Publisher | Elsevier 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? |
Abstract | A 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 Identifier | http://hdl.handle.net/10722/58545 |
ISSN | 2023 Impact Factor: 3.4 2023 SCImago Journal Rankings: 0.919 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Wong, KTM | en_HK |
dc.contributor.author | Lee, JHW | en_HK |
dc.contributor.author | Choi, KW | en_HK |
dc.date.accessioned | 2010-05-31T03:32:17Z | - |
dc.date.available | 2010-05-31T03:32:17Z | - |
dc.date.issued | 2008 | en_HK |
dc.identifier.citation | Communications In Nonlinear Science And Numerical Simulation, 2008, v. 13 n. 10, p. 2071-2090 | en_HK |
dc.identifier.issn | 1007-5704 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/58545 | - |
dc.description.abstract | A 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.language | eng | en_HK |
dc.publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/cnsns | en_HK |
dc.relation.ispartof | Communications in Nonlinear Science and Numerical Simulation | en_HK |
dc.rights | Communications in Nonlinear Science and Numerical Simulation. Copyright © Elsevier BV. | en_HK |
dc.subject | Advective-diffusion | en_HK |
dc.subject | Ecological model | en_HK |
dc.subject | Lagrangian particle model | en_HK |
dc.subject | Particle separation | en_HK |
dc.subject | Relative diffusion | en_HK |
dc.title | A deterministic Lagrangian particle separation-based method for advective-diffusion problems | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://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+Problems | en_HK |
dc.identifier.email | Wong, KTM: ken0wong@hku.hk | en_HK |
dc.identifier.email | Lee, JHW: hreclhw@hku.hk | en_HK |
dc.identifier.email | Choi, KW: choidkw@hkucc.hku.hk | en_HK |
dc.identifier.authority | Wong, KTM=rp00073 | en_HK |
dc.identifier.authority | Lee, JHW=rp00061 | en_HK |
dc.identifier.authority | Choi, KW=rp00107 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.cnsns.2007.05.021 | en_HK |
dc.identifier.scopus | eid_2-s2.0-43049165522 | en_HK |
dc.identifier.hkuros | 148623 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-43049165522&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 13 | en_HK |
dc.identifier.issue | 10 | en_HK |
dc.identifier.spage | 2071 | en_HK |
dc.identifier.epage | 2090 | en_HK |
dc.identifier.isi | WOS:000256612400003 | - |
dc.publisher.place | Netherlands | en_HK |
dc.identifier.scopusauthorid | Wong, KTM=24315177100 | en_HK |
dc.identifier.scopusauthorid | Lee, JHW=36078318900 | en_HK |
dc.identifier.scopusauthorid | Choi, KW=25627214800 | en_HK |
dc.identifier.issnl | 1007-5704 | - |