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Article: Numerical study of atmospheric dispersion under unstably stratified atmosphere

TitleNumerical study of atmospheric dispersion under unstably stratified atmosphere
Authors
KeywordsAtmospheric dispersion modelling
Finite element method
Unstably stratified atmosphere
Issue Date1997
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jweia
Citation
Journal Of Wind Engineering And Industrial Aerodynamics, 1997, v. 67-68, p. 767-779 How to Cite?
AbstractPollutant dispersion under unstably stratified atmosphere was investigated numerically using a second-order closure turbulent dispersion model. The effect of atmospheric stability, which affects the plume trajectory, was studied by carrying out two-dimensional calculations in the horizontal and vertical planes. It was found that the present numerical model can predict several non-Gaussian features of plume behaviour under unstably stratified atmosphere, such as the descent and the rise of a plume, both of which cannot be predicted by k-theory dispersion and conventional Gaussian models. The calculations agreed well with recent findings from experimental studies and another numerical model. Based on the above observations, the second-order closure dispersion model was found to be a promising technique for studying the plume behaviour under different atmospheric stabilities.
Persistent Identifierhttp://hdl.handle.net/10722/75500
ISSN
2015 Impact Factor: 2.024
2015 SCImago Journal Rankings: 1.097
References

 

DC FieldValueLanguage
dc.contributor.authorLiu, CHen_HK
dc.contributor.authorLeung, DYCen_HK
dc.date.accessioned2010-09-06T07:11:46Z-
dc.date.available2010-09-06T07:11:46Z-
dc.date.issued1997en_HK
dc.identifier.citationJournal Of Wind Engineering And Industrial Aerodynamics, 1997, v. 67-68, p. 767-779en_HK
dc.identifier.issn0167-6105en_HK
dc.identifier.urihttp://hdl.handle.net/10722/75500-
dc.description.abstractPollutant dispersion under unstably stratified atmosphere was investigated numerically using a second-order closure turbulent dispersion model. The effect of atmospheric stability, which affects the plume trajectory, was studied by carrying out two-dimensional calculations in the horizontal and vertical planes. It was found that the present numerical model can predict several non-Gaussian features of plume behaviour under unstably stratified atmosphere, such as the descent and the rise of a plume, both of which cannot be predicted by k-theory dispersion and conventional Gaussian models. The calculations agreed well with recent findings from experimental studies and another numerical model. Based on the above observations, the second-order closure dispersion model was found to be a promising technique for studying the plume behaviour under different atmospheric stabilities.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jweiaen_HK
dc.relation.ispartofJournal of Wind Engineering and Industrial Aerodynamicsen_HK
dc.rightsJournal of Wind Engineering & Industrial Aerodynamics. Copyright © Elsevier BV.en_HK
dc.subjectAtmospheric dispersion modellingen_HK
dc.subjectFinite element methoden_HK
dc.subjectUnstably stratified atmosphereen_HK
dc.titleNumerical study of atmospheric dispersion under unstably stratified atmosphereen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0167-6105&volume=67&spage=767&epage=779&date=1997&atitle=Numerical+study+of+atmospheric+dispersion+under+unstably+stratified+atmosphereen_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.scopuseid_2-s2.0-0031109554en_HK
dc.identifier.hkuros31914en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0031109554&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume67-68en_HK
dc.identifier.spage767en_HK
dc.identifier.epage779en_HK
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridLiu, CH=36065161300en_HK
dc.identifier.scopusauthoridLeung, DYC=7203002484en_HK

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