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Conference Paper: Numerical modeling of flows and pollutant dispersion within and above urban street canyons under unstable thermal stratification by large-eddy simulation

TitleNumerical modeling of flows and pollutant dispersion within and above urban street canyons under unstable thermal stratification by large-eddy simulation
Authors
KeywordsEarth sciences
Issue Date2013
PublisherCopernicus GmbH. The Journal's web site is located at http://www.geophysical-research-abstracts.net
Citation
The 10th General Assembly of the European Geosciences Union (EGU 2013), Vienna, Austria, 7-12 April 2013. In Geophysical Research Abstracts, 2013, v. 15, no. EGU2013-1974 How to Cite?
AbstractRecently, with the ever increasing urban areas in developing countries, the problem of air pollution due to vehicular exhaust arouses the concern of different groups of people. Understanding how different factors, such as urban morphology, meteorological conditions and human activities, affect the characteristics of street canyon ventilation, pollutant dispersion above urban areas and pollutant re-entrainment from the shear layer can help us improve air pollution control strategies. Among the factors mentioned above, thermal stratification is a significant one determining the pollutant transport behaviors in certain situation, e.g. when the urban surface is heated by strong solar radiation, which, however, is still not widely explored. The objective of this study is to gain an in-depth understanding of the effects of unstable thermal stratification on the flows and pollutant dispersion within and above urban street canyons through numerical modeling using large-...
Persistent Identifierhttp://hdl.handle.net/10722/190040
ISSN

 

DC FieldValueLanguage
dc.contributor.authorChan, MCen_US
dc.contributor.authorLiu, CHen_US
dc.date.accessioned2013-09-17T15:04:42Z-
dc.date.available2013-09-17T15:04:42Z-
dc.date.issued2013en_US
dc.identifier.citationThe 10th General Assembly of the European Geosciences Union (EGU 2013), Vienna, Austria, 7-12 April 2013. In Geophysical Research Abstracts, 2013, v. 15, no. EGU2013-1974en_US
dc.identifier.issn1607-7962-
dc.identifier.urihttp://hdl.handle.net/10722/190040-
dc.description.abstractRecently, with the ever increasing urban areas in developing countries, the problem of air pollution due to vehicular exhaust arouses the concern of different groups of people. Understanding how different factors, such as urban morphology, meteorological conditions and human activities, affect the characteristics of street canyon ventilation, pollutant dispersion above urban areas and pollutant re-entrainment from the shear layer can help us improve air pollution control strategies. Among the factors mentioned above, thermal stratification is a significant one determining the pollutant transport behaviors in certain situation, e.g. when the urban surface is heated by strong solar radiation, which, however, is still not widely explored. The objective of this study is to gain an in-depth understanding of the effects of unstable thermal stratification on the flows and pollutant dispersion within and above urban street canyons through numerical modeling using large-...-
dc.languageengen_US
dc.publisherCopernicus GmbH. The Journal's web site is located at http://www.geophysical-research-abstracts.net-
dc.relation.ispartofGeophysical Research Abstractsen_US
dc.rightsAuthor holds the copyright-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectEarth sciences-
dc.titleNumerical modeling of flows and pollutant dispersion within and above urban street canyons under unstable thermal stratification by large-eddy simulationen_US
dc.typeConference_Paperen_US
dc.identifier.emailChan, MC: zz047@hku.hken_US
dc.identifier.emailLiu, CH: chliu@hku.hken_US
dc.identifier.authorityLiu, CH=rp00152en_US
dc.description.naturepublished_or_final_version-
dc.identifier.hkuros224512en_US
dc.identifier.volume15-
dc.publisher.placeGermany-

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