Pollutant transport in a Convective Boundary Layer with LES
Autor(a) principal: | |
---|---|
Data de Publicação: | 2006 |
Outros Autores: | , , |
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. |
id |
SBG-3_ee4341ac226345132bf9291cf44ca639 |
---|---|
oai_identifier_str |
oai:scielo:S0102-261X2006000400008 |
network_acronym_str |
SBG-3 |
network_name_str |
Revista Brasileira de Geofísica (Online) |
repository_id_str |
|
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 |
_version_ |
1754820936784150528 |