Pollutant transport in a Convective Boundary Layer with LES

Detalhes bibliográficos
Autor(a) principal: Marques Filho,Edson Pereira
Data de Publicação: 2006
Outros Autores: Oliveira,Amauri Pereira de, Rizza,Umberto, Karam,Hugo Abi
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Brasileira de Geofísica (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-261X2006000400008
Resumo: This work describes the statistical properties of a Convective Boundary Layer (CBL) and the associated turbulent transport of a passive and inert pollutant, continuously emitted in the atmosphere by an area-source on the surface. The CBL flow and properties are simulating with a Large Eddy Simulation (LES) model. To assure the development of a quasi-steady turbulent regime, both the stability parameter and the Turbulent Kinetic Energy (TKE) criteria were applied to LES with similar results. The vertical structure of the pollutant concentration, potential temperature associated with vertical turbulent fluxes and variances are consistent with the mixed layer similarity predictions. Both the pollutant concentration and the vertical wind skewness fluctuations are associated with the updrafts and downdrafts distributions, emphasizing the importance of the entrainment in the cleaning of the CBL.
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spelling Pollutant transport in a Convective Boundary Layer with LESLES modelConvective Boundary LayerPollutant dispersionNumerical modelsThis work describes the statistical properties of a Convective Boundary Layer (CBL) and the associated turbulent transport of a passive and inert pollutant, continuously emitted in the atmosphere by an area-source on the surface. The CBL flow and properties are simulating with a Large Eddy Simulation (LES) model. To assure the development of a quasi-steady turbulent regime, both the stability parameter and the Turbulent Kinetic Energy (TKE) criteria were applied to LES with similar results. The vertical structure of the pollutant concentration, potential temperature associated with vertical turbulent fluxes and variances are consistent with the mixed layer similarity predictions. Both the pollutant concentration and the vertical wind skewness fluctuations are associated with the updrafts and downdrafts distributions, emphasizing the importance of the entrainment in the cleaning of the CBL.Sociedade Brasileira de Geofísica2006-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-261X2006000400008Revista Brasileira de Geofísica v.24 n.4 2006reponame:Revista Brasileira de Geofísica (Online)instname:Sociedade Brasileira de Geofísica (SBG)instacron:SBG10.1590/S0102-261X2006000400008info:eu-repo/semantics/openAccessMarques Filho,Edson PereiraOliveira,Amauri Pereira deRizza,UmbertoKaram,Hugo Abieng2007-10-01T00:00:00Zoai:scielo:S0102-261X2006000400008Revistahttp://www.scielo.br/rbgONGhttps://old.scielo.br/oai/scielo-oai.php||sbgf@sbgf.org.br1809-45110102-261Xopendoar:2007-10-01T00:00Revista Brasileira de Geofísica (Online) - Sociedade Brasileira de Geofísica (SBG)false
dc.title.none.fl_str_mv Pollutant transport in a Convective Boundary Layer with LES
title Pollutant transport in a Convective Boundary Layer with LES
spellingShingle Pollutant transport in a Convective Boundary Layer with LES
Marques Filho,Edson Pereira
LES model
Convective Boundary Layer
Pollutant dispersion
Numerical models
title_short Pollutant transport in a Convective Boundary Layer with LES
title_full Pollutant transport in a Convective Boundary Layer with LES
title_fullStr Pollutant transport in a Convective Boundary Layer with LES
title_full_unstemmed Pollutant transport in a Convective Boundary Layer with LES
title_sort Pollutant transport in a Convective Boundary Layer with LES
author Marques Filho,Edson Pereira
author_facet Marques Filho,Edson Pereira
Oliveira,Amauri Pereira de
Rizza,Umberto
Karam,Hugo Abi
author_role author
author2 Oliveira,Amauri Pereira de
Rizza,Umberto
Karam,Hugo Abi
author2_role author
author
author
dc.contributor.author.fl_str_mv Marques Filho,Edson Pereira
Oliveira,Amauri Pereira de
Rizza,Umberto
Karam,Hugo Abi
dc.subject.por.fl_str_mv LES model
Convective Boundary Layer
Pollutant dispersion
Numerical models
topic LES model
Convective Boundary Layer
Pollutant dispersion
Numerical models
description This work describes the statistical properties of a Convective Boundary Layer (CBL) and the associated turbulent transport of a passive and inert pollutant, continuously emitted in the atmosphere by an area-source on the surface. The CBL flow and properties are simulating with a Large Eddy Simulation (LES) model. To assure the development of a quasi-steady turbulent regime, both the stability parameter and the Turbulent Kinetic Energy (TKE) criteria were applied to LES with similar results. The vertical structure of the pollutant concentration, potential temperature associated with vertical turbulent fluxes and variances are consistent with the mixed layer similarity predictions. Both the pollutant concentration and the vertical wind skewness fluctuations are associated with the updrafts and downdrafts distributions, emphasizing the importance of the entrainment in the cleaning of the CBL.
publishDate 2006
dc.date.none.fl_str_mv 2006-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-261X2006000400008
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-261X2006000400008
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0102-261X2006000400008
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Geofísica
publisher.none.fl_str_mv Sociedade Brasileira de Geofísica
dc.source.none.fl_str_mv Revista Brasileira de Geofísica v.24 n.4 2006
reponame:Revista Brasileira de Geofísica (Online)
instname:Sociedade Brasileira de Geofísica (SBG)
instacron:SBG
instname_str Sociedade Brasileira de Geofísica (SBG)
instacron_str SBG
institution SBG
reponame_str Revista Brasileira de Geofísica (Online)
collection Revista Brasileira de Geofísica (Online)
repository.name.fl_str_mv Revista Brasileira de Geofísica (Online) - Sociedade Brasileira de Geofísica (SBG)
repository.mail.fl_str_mv ||sbgf@sbgf.org.br
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