Experimental and numerical characterization of the transverse dispersion at the exit of a short ceramic foam inside a pipe

Detalhes bibliográficos
Autor(a) principal: Pereira, José Carlos F.
Data de Publicação: 2005
Outros Autores: Malico, Isabel, Hayashi, Thamy C., Raposo, Jorge M. F.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/5512
https://doi.org/10.1016/j.ijheatmasstransfer.2004.08.001
Resumo: The paper theoretically and numerically describes and experimentally studies transverse dispersion of a passive tracer in highly porous ceramic foams of different pore sizes. The pore Reynolds numbers range from 10 to 300. Digital images of the dispersion patterns were recorded and an approximate transverse dispersion coefficient was determined. Numerical solutions of the steady fluid flow and scalar concentrations confirm that the transverse dispersion coefficient models, based on the assumption of dominance of mechanical dispersion and on the linear dependence of the transverse dispersion model on ud, are able to predict satisfactorily the dispersion of a tracer for the range of Reynolds numbers considered. An alternative derivation of this linear dependence based on the closure of the volume averaged scalar transport equation is also presented. The influence of the length of the porous media in the stream direction on transversal and longitudinal dispersion is consistent with findings for packed beds at much lower Peclet and Reynolds numbers.
id RCAP_2e953aa2888fc6377adb40487eed7450
oai_identifier_str oai:dspace.uevora.pt:10174/5512
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Experimental and numerical characterization of the transverse dispersion at the exit of a short ceramic foam inside a pipeExperimentsCFDDispersionPorous MediaThe paper theoretically and numerically describes and experimentally studies transverse dispersion of a passive tracer in highly porous ceramic foams of different pore sizes. The pore Reynolds numbers range from 10 to 300. Digital images of the dispersion patterns were recorded and an approximate transverse dispersion coefficient was determined. Numerical solutions of the steady fluid flow and scalar concentrations confirm that the transverse dispersion coefficient models, based on the assumption of dominance of mechanical dispersion and on the linear dependence of the transverse dispersion model on ud, are able to predict satisfactorily the dispersion of a tracer for the range of Reynolds numbers considered. An alternative derivation of this linear dependence based on the closure of the volume averaged scalar transport equation is also presented. The influence of the length of the porous media in the stream direction on transversal and longitudinal dispersion is consistent with findings for packed beds at much lower Peclet and Reynolds numbers.2012-11-13T18:06:37Z2012-11-132005-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/5512http://hdl.handle.net/10174/5512https://doi.org/10.1016/j.ijheatmasstransfer.2004.08.001engPereira, J. C. F., Malico, I., Hayashi, T. C., Raposo, J. M. F. (2005). Experimental and numerical characterization of the transverse dispersion at the exit of a short ceramic foam inside a pipe. International Journal of Heat and Mass Transfer, 48, 1-14.jcfpereira@mail.ist.utl.ptimbm@uevora.ptthamy.hayashi@mecanica.ufrgs.brnd286Pereira, José Carlos F.Malico, IsabelHayashi, Thamy C.Raposo, Jorge M. F.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T18:44:25Zoai:dspace.uevora.pt:10174/5512Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:00:34.440491Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Experimental and numerical characterization of the transverse dispersion at the exit of a short ceramic foam inside a pipe
title Experimental and numerical characterization of the transverse dispersion at the exit of a short ceramic foam inside a pipe
spellingShingle Experimental and numerical characterization of the transverse dispersion at the exit of a short ceramic foam inside a pipe
Pereira, José Carlos F.
Experiments
CFD
Dispersion
Porous Media
title_short Experimental and numerical characterization of the transverse dispersion at the exit of a short ceramic foam inside a pipe
title_full Experimental and numerical characterization of the transverse dispersion at the exit of a short ceramic foam inside a pipe
title_fullStr Experimental and numerical characterization of the transverse dispersion at the exit of a short ceramic foam inside a pipe
title_full_unstemmed Experimental and numerical characterization of the transverse dispersion at the exit of a short ceramic foam inside a pipe
title_sort Experimental and numerical characterization of the transverse dispersion at the exit of a short ceramic foam inside a pipe
author Pereira, José Carlos F.
author_facet Pereira, José Carlos F.
Malico, Isabel
Hayashi, Thamy C.
Raposo, Jorge M. F.
author_role author
author2 Malico, Isabel
Hayashi, Thamy C.
Raposo, Jorge M. F.
author2_role author
author
author
dc.contributor.author.fl_str_mv Pereira, José Carlos F.
Malico, Isabel
Hayashi, Thamy C.
Raposo, Jorge M. F.
dc.subject.por.fl_str_mv Experiments
CFD
Dispersion
Porous Media
topic Experiments
CFD
Dispersion
Porous Media
description The paper theoretically and numerically describes and experimentally studies transverse dispersion of a passive tracer in highly porous ceramic foams of different pore sizes. The pore Reynolds numbers range from 10 to 300. Digital images of the dispersion patterns were recorded and an approximate transverse dispersion coefficient was determined. Numerical solutions of the steady fluid flow and scalar concentrations confirm that the transverse dispersion coefficient models, based on the assumption of dominance of mechanical dispersion and on the linear dependence of the transverse dispersion model on ud, are able to predict satisfactorily the dispersion of a tracer for the range of Reynolds numbers considered. An alternative derivation of this linear dependence based on the closure of the volume averaged scalar transport equation is also presented. The influence of the length of the porous media in the stream direction on transversal and longitudinal dispersion is consistent with findings for packed beds at much lower Peclet and Reynolds numbers.
publishDate 2005
dc.date.none.fl_str_mv 2005-01-01T00:00:00Z
2012-11-13T18:06:37Z
2012-11-13
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10174/5512
http://hdl.handle.net/10174/5512
https://doi.org/10.1016/j.ijheatmasstransfer.2004.08.001
url http://hdl.handle.net/10174/5512
https://doi.org/10.1016/j.ijheatmasstransfer.2004.08.001
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Pereira, J. C. F., Malico, I., Hayashi, T. C., Raposo, J. M. F. (2005). Experimental and numerical characterization of the transverse dispersion at the exit of a short ceramic foam inside a pipe. International Journal of Heat and Mass Transfer, 48, 1-14.
jcfpereira@mail.ist.utl.pt
imbm@uevora.pt
thamy.hayashi@mecanica.ufrgs.br
nd
286
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799136488998305792

Registros relacionados