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Article: On plume meandering in unstable stratification

TitleOn plume meandering in unstable stratification
Authors
KeywordsConvective boundary layer (CBL)
Direct numerical simulation (DNS)
Gaussian plume model
Plume rise and descent
Issue Date2005
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/atmosenv
Citation
Atmospheric Environment, 2005, v. 39 n. 16, p. 2995-2999 How to Cite?
AbstractVertical plume meandering of gaseous pollutant is commonly experienced in the daytime atmospheric boundary layer (also know as convective boundary layer, CBL) that arose from the complicated interaction between buoyancy-generated turbulence and gravitational force. It leads to rapid pollutant mixing that cannot be accurately modeled by conventional Gaussian plume model. In the light of explaining the mechanism of plume rises and descents in CBLs, this study employs a direct numerical simulation (DNS) technique to compute the plume behaviors for pollutant emitted from line sources placed parallel to the spanwise direction in an unstably stratified turbulent open channel flow. The DNS results show that the plume meandering is due to the domination of uni-directional mean vertical pollutant fluxes above and below the mean plume height. © 2005 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/75499
ISSN
2015 Impact Factor: 3.459
2015 SCImago Journal Rankings: 1.999
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLiu, CHen_HK
dc.contributor.authorLeung, DYCen_HK
dc.date.accessioned2010-09-06T07:11:45Z-
dc.date.available2010-09-06T07:11:45Z-
dc.date.issued2005en_HK
dc.identifier.citationAtmospheric Environment, 2005, v. 39 n. 16, p. 2995-2999en_HK
dc.identifier.issn1352-2310en_HK
dc.identifier.urihttp://hdl.handle.net/10722/75499-
dc.description.abstractVertical plume meandering of gaseous pollutant is commonly experienced in the daytime atmospheric boundary layer (also know as convective boundary layer, CBL) that arose from the complicated interaction between buoyancy-generated turbulence and gravitational force. It leads to rapid pollutant mixing that cannot be accurately modeled by conventional Gaussian plume model. In the light of explaining the mechanism of plume rises and descents in CBLs, this study employs a direct numerical simulation (DNS) technique to compute the plume behaviors for pollutant emitted from line sources placed parallel to the spanwise direction in an unstably stratified turbulent open channel flow. The DNS results show that the plume meandering is due to the domination of uni-directional mean vertical pollutant fluxes above and below the mean plume height. © 2005 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/atmosenven_HK
dc.relation.ispartofAtmospheric Environmenten_HK
dc.subjectConvective boundary layer (CBL)en_HK
dc.subjectDirect numerical simulation (DNS)en_HK
dc.subjectGaussian plume modelen_HK
dc.subjectPlume rise and descenten_HK
dc.titleOn plume meandering in unstable stratificationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1352-2310&volume=39&issue=16&spage=2995&epage=2999&date=2005&atitle=On+plume+meandering+in+unstable+stratificationen_HK
dc.identifier.emailLiu, CH:chliu@hkucc.hku.hken_HK
dc.identifier.emailLeung, DYC:ycleung@hku.hken_HK
dc.identifier.authorityLiu, CH=rp00152en_HK
dc.identifier.authorityLeung, DYC=rp00149en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.atmosenv.2005.02.024en_HK
dc.identifier.scopuseid_2-s2.0-19444364921en_HK
dc.identifier.hkuros98500en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-19444364921&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume39en_HK
dc.identifier.issue16en_HK
dc.identifier.spage2995en_HK
dc.identifier.epage2999en_HK
dc.identifier.isiWOS:000230184500016-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLiu, CH=36065161300en_HK
dc.identifier.scopusauthoridLeung, DYC=7203002484en_HK

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