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Article: Development of a k-ε model for the determination of air exchange rates for street canyons

TitleDevelopment of a k-ε model for the determination of air exchange rates for street canyons
Authors
KeywordsAir Exchange Rate (ACH)
Renormalized-Group (Rng) K-Ε Turbulence Model
Two-Dimensional
Issue Date2005
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/atmosenv
Citation
Atmospheric Environment, 2005, v. 39 n. 38, p. 7285-7296 How to Cite?
AbstractA two-dimensional renormalized-group (RNG) k-ε turbulence model was developed to calculate the air exchange rate (ACH) of idealized street canyons. This model was validated against other modelling (large-eddy simulation, LES, and k-ε) and wind tunnel results. It was demonstrated that the current k-ε model was able to capture the complicated flow structures inside street canyons whose outputs agreed reasonably well with other modelling and wind tunnel results available in literature. This k-ε model was then applied to calculate the ACH for street canyons of aspect (building-height-to-street-width) ratios 0.5, 1.0, and 2.0. The values of ACH calculated by the current k-ε model compared favourably with those calculated by LES in which their differences were less than 20%. Moreover, there was a remarkable saving in computer resources and computation time by using the current k-ε model. © 2005 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/156791
ISSN
2015 Impact Factor: 3.459
2015 SCImago Journal Rankings: 1.999
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, XXen_US
dc.contributor.authorLiu, CHen_US
dc.contributor.authorLeung, DYCen_US
dc.date.accessioned2012-08-08T08:43:59Z-
dc.date.available2012-08-08T08:43:59Z-
dc.date.issued2005en_US
dc.identifier.citationAtmospheric Environment, 2005, v. 39 n. 38, p. 7285-7296en_US
dc.identifier.issn1352-2310en_US
dc.identifier.urihttp://hdl.handle.net/10722/156791-
dc.description.abstractA two-dimensional renormalized-group (RNG) k-ε turbulence model was developed to calculate the air exchange rate (ACH) of idealized street canyons. This model was validated against other modelling (large-eddy simulation, LES, and k-ε) and wind tunnel results. It was demonstrated that the current k-ε model was able to capture the complicated flow structures inside street canyons whose outputs agreed reasonably well with other modelling and wind tunnel results available in literature. This k-ε model was then applied to calculate the ACH for street canyons of aspect (building-height-to-street-width) ratios 0.5, 1.0, and 2.0. The values of ACH calculated by the current k-ε model compared favourably with those calculated by LES in which their differences were less than 20%. Moreover, there was a remarkable saving in computer resources and computation time by using the current k-ε model. © 2005 Elsevier Ltd. All rights reserved.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/atmosenven_US
dc.relation.ispartofAtmospheric Environmenten_US
dc.subjectAir Exchange Rate (ACH)en_US
dc.subjectRenormalized-Group (Rng) K-Ε Turbulence Modelen_US
dc.subjectTwo-Dimensionalen_US
dc.titleDevelopment of a k-ε model for the determination of air exchange rates for street canyonsen_US
dc.typeArticleen_US
dc.identifier.emailLiu, CH: chliu@hkucc.hku.hken_US
dc.identifier.emailLeung, DYC: ycleung@hku.hken_US
dc.identifier.authorityLiu, CH=rp00152en_US
dc.identifier.authorityLeung, DYC=rp00149en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.atmosenv.2005.09.007en_US
dc.identifier.scopuseid_2-s2.0-27544434760en_US
dc.identifier.hkuros117385-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-27544434760&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume39en_US
dc.identifier.issue38en_US
dc.identifier.spage7285en_US
dc.identifier.epage7296en_US
dc.identifier.isiWOS:000233671700008-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridLi, XX=8091988100en_US
dc.identifier.scopusauthoridLiu, CH=36065161300en_US
dc.identifier.scopusauthoridLeung, DYC=7203002484en_US

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