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Article: Recent progress in CFD modelling of wind field and pollutant transport in street canyons

TitleRecent progress in CFD modelling of wind field and pollutant transport in street canyons
Authors
KeywordsEulerian dispersion model
k - ε turbulence model
Lagrangian particle dispersion model (LPDM)
Large-eddy simulation (LES)
Photochemical reactions
Thermal effects
Issue Date2006
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/atmosenv
Citation
Atmospheric Environment, 2006, v. 40 n. 29, p. 5640-5658 How to Cite?
AbstractWith rapid development in computer hardware and numerical algorithms, computational fluid dynamics (CFD) techniques are widely utilized to study the wind field and pollutant transport in urban street canyons. The recent advancements and achievements in street-canyon pollution research using mathematical modelling approaches are reviewed in this paper. The standard, renormalized-group (RNG), and realizable k - ε{lunate} turbulence closure schemes are the most commonly used Reynolds-averaged Navier-Stokes (RANS) models in street-canyon flow research, including the studies on the effects of street-canyon aspect ratio, building configuration, ambient wind direction, inflow turbulence intensities, vehicle-induced turbulence, and thermal stratifications. Another approach to turbulence simulation inside street canyons is large-eddy simulation (LES) which can handle a broad range of turbulent motions in a transient manner. These two approaches have their merits and the choice between them will be a compromise between accuracy and cost. Several guidelines on this choice as well as some comments on the 2D and 3D CFD simulations are given. The outputs from wind field models can be used with pollutant transport models to calculate the pollutant distribution inside street canyons. The most commonly employed pollutant transport models include Lagrangian, Eulerian, and Lagrangian/Eulerian hybrid models. The advantages and shortcomings of these models are summarized. Several other modelling concerns, such as chemically reactive pollutant dispersion and boundary conditions treatment, are also discussed. © 2006 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/129120
ISSN
2015 Impact Factor: 3.459
2015 SCImago Journal Rankings: 1.999
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, XXen_HK
dc.contributor.authorLiu, CHen_HK
dc.contributor.authorLeung, DYCen_HK
dc.contributor.authorLam, KMen_HK
dc.date.accessioned2010-12-23T08:32:50Z-
dc.date.available2010-12-23T08:32:50Z-
dc.date.issued2006en_HK
dc.identifier.citationAtmospheric Environment, 2006, v. 40 n. 29, p. 5640-5658en_HK
dc.identifier.issn1352-2310en_HK
dc.identifier.urihttp://hdl.handle.net/10722/129120-
dc.description.abstractWith rapid development in computer hardware and numerical algorithms, computational fluid dynamics (CFD) techniques are widely utilized to study the wind field and pollutant transport in urban street canyons. The recent advancements and achievements in street-canyon pollution research using mathematical modelling approaches are reviewed in this paper. The standard, renormalized-group (RNG), and realizable k - ε{lunate} turbulence closure schemes are the most commonly used Reynolds-averaged Navier-Stokes (RANS) models in street-canyon flow research, including the studies on the effects of street-canyon aspect ratio, building configuration, ambient wind direction, inflow turbulence intensities, vehicle-induced turbulence, and thermal stratifications. Another approach to turbulence simulation inside street canyons is large-eddy simulation (LES) which can handle a broad range of turbulent motions in a transient manner. These two approaches have their merits and the choice between them will be a compromise between accuracy and cost. Several guidelines on this choice as well as some comments on the 2D and 3D CFD simulations are given. The outputs from wind field models can be used with pollutant transport models to calculate the pollutant distribution inside street canyons. The most commonly employed pollutant transport models include Lagrangian, Eulerian, and Lagrangian/Eulerian hybrid models. The advantages and shortcomings of these models are summarized. Several other modelling concerns, such as chemically reactive pollutant dispersion and boundary conditions treatment, are also discussed. © 2006 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/atmosenven_HK
dc.relation.ispartofAtmospheric Environmenten_HK
dc.rightsAppropriate Bibliographic Citation:Authors posting Accepted Author Manuscript online should later add a citation for the Published Journal Article indicating that the Article was subsequently published, and may mention the journal title provided that they add the following text at the beginning of the document: “NOTICE: this is the author’s version of a work that was accepted for publication in <Journal title>. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in PUBLICATION, [VOL#, ISSUE#, (DATE)] DOI#”-
dc.subjectEulerian dispersion modelen_HK
dc.subjectk - ε turbulence modelen_HK
dc.subjectLagrangian particle dispersion model (LPDM)en_HK
dc.subjectLarge-eddy simulation (LES)en_HK
dc.subjectPhotochemical reactionsen_HK
dc.subjectThermal effectsen_HK
dc.titleRecent progress in CFD modelling of wind field and pollutant transport in street canyonsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1352-2310&volume=40&issue=29&spage=5640&epage=5658&date=2006&atitle=Recent+progress+in+CFD+modelling+of+wind+field+and+pollutant+transport+in+street+canyons-
dc.identifier.emailLiu, CH:chliu@hkucc.hku.hken_HK
dc.identifier.emailLeung, DYC:ycleung@hku.hken_HK
dc.identifier.emailLam, KM:kmlam@hku.hken_HK
dc.identifier.authorityLiu, CH=rp00152en_HK
dc.identifier.authorityLeung, DYC=rp00149en_HK
dc.identifier.authorityLam, KM=rp00134en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.atmosenv.2006.04.055en_HK
dc.identifier.scopuseid_2-s2.0-33746927200en_HK
dc.identifier.hkuros177006en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33746927200&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume40en_HK
dc.identifier.issue29en_HK
dc.identifier.spage5640en_HK
dc.identifier.epage5658en_HK
dc.identifier.isiWOS:000240524600011-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLi, XX=8959643100en_HK
dc.identifier.scopusauthoridLiu, CH=36065161300en_HK
dc.identifier.scopusauthoridLeung, DYC=7203002484en_HK
dc.identifier.scopusauthoridLam, KM=7403656958en_HK
dc.identifier.citeulike11082215-

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