PREDICTING DIFFUSIVITIES IN DENSE FLUIDS
Autor(a) principal: | |
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Data de Publicação: | 1997 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Food Science and Technology (Campinas) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20611997000400023 |
Resumo: | In this work the Weeks-Chandler-Andersen (WCA) perturbation theory coupled with the Enskogs solution of the Boltzmann equation for dense hard-sphere fluids is employed for estimating diffusion coefficients in compressed pure liquids and fluids and dense fluid mixtures. The effect of density correction on the estimation of diffusivities is analyzed using the Carnahan-Starling pair correlation function and the correlation of Speedy and Harris which have been proposed as models of self-diffusion coefficient of hard-sphere fluids. The approach presented here is based on the smooth hard-sphere theory without any binary adjustable parameters and can be readily used for estimating diffusivities in multicomponent fluid mixtures. It is shown that the correlated and the predicted diffusivities are in good agreement with the experimental data and much better than estimates of Wilke-Chang equation. |
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Food Science and Technology (Campinas) |
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PREDICTING DIFFUSIVITIES IN DENSE FLUIDSDiffusivityperturbation theorydense liquidsIn this work the Weeks-Chandler-Andersen (WCA) perturbation theory coupled with the Enskogs solution of the Boltzmann equation for dense hard-sphere fluids is employed for estimating diffusion coefficients in compressed pure liquids and fluids and dense fluid mixtures. The effect of density correction on the estimation of diffusivities is analyzed using the Carnahan-Starling pair correlation function and the correlation of Speedy and Harris which have been proposed as models of self-diffusion coefficient of hard-sphere fluids. The approach presented here is based on the smooth hard-sphere theory without any binary adjustable parameters and can be readily used for estimating diffusivities in multicomponent fluid mixtures. It is shown that the correlated and the predicted diffusivities are in good agreement with the experimental data and much better than estimates of Wilke-Chang equation.Sociedade Brasileira de Ciência e Tecnologia de Alimentos1997-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20611997000400023Food Science and Technology v.17 n.4 1997reponame:Food Science and Technology (Campinas)instname:Sociedade Brasileira de Ciência e Tecnologia de Alimentos (SBCTA)instacron:SBCTA10.1590/S0101-20611997000400023info:eu-repo/semantics/openAccessDARIVA,CláudioCOELHO,Luiz A. F.OLIVEIRA,José V.eng1998-12-17T00:00:00Zoai:scielo:S0101-20611997000400023Revistahttp://www.scielo.br/ctaONGhttps://old.scielo.br/oai/scielo-oai.php||revista@sbcta.org.br1678-457X0101-2061opendoar:1998-12-17T00:00Food Science and Technology (Campinas) - Sociedade Brasileira de Ciência e Tecnologia de Alimentos (SBCTA)false |
dc.title.none.fl_str_mv |
PREDICTING DIFFUSIVITIES IN DENSE FLUIDS |
title |
PREDICTING DIFFUSIVITIES IN DENSE FLUIDS |
spellingShingle |
PREDICTING DIFFUSIVITIES IN DENSE FLUIDS DARIVA,Cláudio Diffusivity perturbation theory dense liquids |
title_short |
PREDICTING DIFFUSIVITIES IN DENSE FLUIDS |
title_full |
PREDICTING DIFFUSIVITIES IN DENSE FLUIDS |
title_fullStr |
PREDICTING DIFFUSIVITIES IN DENSE FLUIDS |
title_full_unstemmed |
PREDICTING DIFFUSIVITIES IN DENSE FLUIDS |
title_sort |
PREDICTING DIFFUSIVITIES IN DENSE FLUIDS |
author |
DARIVA,Cláudio |
author_facet |
DARIVA,Cláudio COELHO,Luiz A. F. OLIVEIRA,José V. |
author_role |
author |
author2 |
COELHO,Luiz A. F. OLIVEIRA,José V. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
DARIVA,Cláudio COELHO,Luiz A. F. OLIVEIRA,José V. |
dc.subject.por.fl_str_mv |
Diffusivity perturbation theory dense liquids |
topic |
Diffusivity perturbation theory dense liquids |
description |
In this work the Weeks-Chandler-Andersen (WCA) perturbation theory coupled with the Enskogs solution of the Boltzmann equation for dense hard-sphere fluids is employed for estimating diffusion coefficients in compressed pure liquids and fluids and dense fluid mixtures. The effect of density correction on the estimation of diffusivities is analyzed using the Carnahan-Starling pair correlation function and the correlation of Speedy and Harris which have been proposed as models of self-diffusion coefficient of hard-sphere fluids. The approach presented here is based on the smooth hard-sphere theory without any binary adjustable parameters and can be readily used for estimating diffusivities in multicomponent fluid mixtures. It is shown that the correlated and the predicted diffusivities are in good agreement with the experimental data and much better than estimates of Wilke-Chang equation. |
publishDate |
1997 |
dc.date.none.fl_str_mv |
1997-12-01 |
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=S0101-20611997000400023 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20611997000400023 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0101-20611997000400023 |
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 Ciência e Tecnologia de Alimentos |
publisher.none.fl_str_mv |
Sociedade Brasileira de Ciência e Tecnologia de Alimentos |
dc.source.none.fl_str_mv |
Food Science and Technology v.17 n.4 1997 reponame:Food Science and Technology (Campinas) instname:Sociedade Brasileira de Ciência e Tecnologia de Alimentos (SBCTA) instacron:SBCTA |
instname_str |
Sociedade Brasileira de Ciência e Tecnologia de Alimentos (SBCTA) |
instacron_str |
SBCTA |
institution |
SBCTA |
reponame_str |
Food Science and Technology (Campinas) |
collection |
Food Science and Technology (Campinas) |
repository.name.fl_str_mv |
Food Science and Technology (Campinas) - Sociedade Brasileira de Ciência e Tecnologia de Alimentos (SBCTA) |
repository.mail.fl_str_mv |
||revista@sbcta.org.br |
_version_ |
1752126309267406848 |