Wall effects on the terminal velocity of spherical particles in Newtonian and non-Newtonian fluids

Detalhes bibliográficos
Autor(a) principal: ATAÍDE,C. H.
Data de Publicação: 1999
Outros Autores: PEREIRA,F. A. R., BARROZO,M. A. S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Chemical Engineering
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66321999000400007
Resumo: The objective of this work is to study the effect of confining walls on the free settling of spherical particles along the axes of five vertical cylindrical tubes in Newtonian and non-Newtonian liquids. Experimental results were predominantly obtained in the particle flow region between the Stokes and the Newton regimes (intermediate region) and displayed Reynolds numbers in the ranges 0.7&lt;Re&lt;311 for aqueous glycerine solutions and 0.2&lt;Re&lt;340 for aqueous carboximethilcellulose solution considering the range of 0&lt;<FONT FACE="Symbol">b</font>&lt;0.55. These results allowed to analyze the procedure for estimating vt<FONT FACE="Symbol">¥ </font>as a function of b based on vt data and present correlations for estimating the wall effects on the fall of spheres in Newtonian liquids as well as for the characteristic shear rate of spheres in non-Newtonian fluids.
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spelling Wall effects on the terminal velocity of spherical particles in Newtonian and non-Newtonian fluidswall effectsspherical particlesNewtonian and non-Newtonian liquidsThe objective of this work is to study the effect of confining walls on the free settling of spherical particles along the axes of five vertical cylindrical tubes in Newtonian and non-Newtonian liquids. Experimental results were predominantly obtained in the particle flow region between the Stokes and the Newton regimes (intermediate region) and displayed Reynolds numbers in the ranges 0.7&lt;Re&lt;311 for aqueous glycerine solutions and 0.2&lt;Re&lt;340 for aqueous carboximethilcellulose solution considering the range of 0&lt;<FONT FACE="Symbol">b</font>&lt;0.55. These results allowed to analyze the procedure for estimating vt<FONT FACE="Symbol">¥ </font>as a function of b based on vt data and present correlations for estimating the wall effects on the fall of spheres in Newtonian liquids as well as for the characteristic shear rate of spheres in non-Newtonian fluids.Brazilian Society of Chemical Engineering1999-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66321999000400007Brazilian Journal of Chemical Engineering v.16 n.4 1999reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/S0104-66321999000400007info:eu-repo/semantics/openAccessATAÍDE,C. H.PEREIRA,F. A. R.BARROZO,M. A. S.eng2000-03-01T00:00:00Zoai:scielo:S0104-66321999000400007Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2000-03-01T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false
dc.title.none.fl_str_mv Wall effects on the terminal velocity of spherical particles in Newtonian and non-Newtonian fluids
title Wall effects on the terminal velocity of spherical particles in Newtonian and non-Newtonian fluids
spellingShingle Wall effects on the terminal velocity of spherical particles in Newtonian and non-Newtonian fluids
ATAÍDE,C. H.
wall effects
spherical particles
Newtonian and non-Newtonian liquids
title_short Wall effects on the terminal velocity of spherical particles in Newtonian and non-Newtonian fluids
title_full Wall effects on the terminal velocity of spherical particles in Newtonian and non-Newtonian fluids
title_fullStr Wall effects on the terminal velocity of spherical particles in Newtonian and non-Newtonian fluids
title_full_unstemmed Wall effects on the terminal velocity of spherical particles in Newtonian and non-Newtonian fluids
title_sort Wall effects on the terminal velocity of spherical particles in Newtonian and non-Newtonian fluids
author ATAÍDE,C. H.
author_facet ATAÍDE,C. H.
PEREIRA,F. A. R.
BARROZO,M. A. S.
author_role author
author2 PEREIRA,F. A. R.
BARROZO,M. A. S.
author2_role author
author
dc.contributor.author.fl_str_mv ATAÍDE,C. H.
PEREIRA,F. A. R.
BARROZO,M. A. S.
dc.subject.por.fl_str_mv wall effects
spherical particles
Newtonian and non-Newtonian liquids
topic wall effects
spherical particles
Newtonian and non-Newtonian liquids
description The objective of this work is to study the effect of confining walls on the free settling of spherical particles along the axes of five vertical cylindrical tubes in Newtonian and non-Newtonian liquids. Experimental results were predominantly obtained in the particle flow region between the Stokes and the Newton regimes (intermediate region) and displayed Reynolds numbers in the ranges 0.7&lt;Re&lt;311 for aqueous glycerine solutions and 0.2&lt;Re&lt;340 for aqueous carboximethilcellulose solution considering the range of 0&lt;<FONT FACE="Symbol">b</font>&lt;0.55. These results allowed to analyze the procedure for estimating vt<FONT FACE="Symbol">¥ </font>as a function of b based on vt data and present correlations for estimating the wall effects on the fall of spheres in Newtonian liquids as well as for the characteristic shear rate of spheres in non-Newtonian fluids.
publishDate 1999
dc.date.none.fl_str_mv 1999-12-01
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=S0104-66321999000400007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66321999000400007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0104-66321999000400007
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 Brazilian Society of Chemical Engineering
publisher.none.fl_str_mv Brazilian Society of Chemical Engineering
dc.source.none.fl_str_mv Brazilian Journal of Chemical Engineering v.16 n.4 1999
reponame:Brazilian Journal of Chemical Engineering
instname:Associação Brasileira de Engenharia Química (ABEQ)
instacron:ABEQ
instname_str Associação Brasileira de Engenharia Química (ABEQ)
instacron_str ABEQ
institution ABEQ
reponame_str Brazilian Journal of Chemical Engineering
collection Brazilian Journal of Chemical Engineering
repository.name.fl_str_mv Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)
repository.mail.fl_str_mv rgiudici@usp.br||rgiudici@usp.br
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