The viscosity distribution around a rising bubble in shear-thinning non-newtonian fluids

Detalhes bibliográficos
Autor(a) principal: Li,Shaobai
Data de Publicação: 2012
Outros Autores: Ma,Youguang, Fu,Taotao, Zhu,Chunying, Li,Huaizhi
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=S0104-66322012000200007
Resumo: The viscosity distribution of the liquid around a rising bubble in carboxymethyl cellulose (CMC) aqueous solutions was measured experimentally by particle image velocimetry (PIV). The effect of the concentration of CMC solutions on the viscosity distribution around a bubble and the coupling relations between the viscosity field, flow field and shear stress field were also studied. Results indicated that the specific viscosity (non-dimensionalized by η0) decreases with the increase in CMC solution concentration due to a shear thinning effect. Within the experimental range, similar viscosity distributions of liquids around a rising bubble were found: a hollow cylindrical low viscosity region around the bubble wake and a high viscosity region in the central bubble wake.
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spelling The viscosity distribution around a rising bubble in shear-thinning non-newtonian fluidsNon-Newtonian fluidBubbleViscosity distributionShear-thinning effectThe viscosity distribution of the liquid around a rising bubble in carboxymethyl cellulose (CMC) aqueous solutions was measured experimentally by particle image velocimetry (PIV). The effect of the concentration of CMC solutions on the viscosity distribution around a bubble and the coupling relations between the viscosity field, flow field and shear stress field were also studied. Results indicated that the specific viscosity (non-dimensionalized by η0) decreases with the increase in CMC solution concentration due to a shear thinning effect. Within the experimental range, similar viscosity distributions of liquids around a rising bubble were found: a hollow cylindrical low viscosity region around the bubble wake and a high viscosity region in the central bubble wake.Brazilian Society of Chemical Engineering2012-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322012000200007Brazilian Journal of Chemical Engineering v.29 n.2 2012reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/S0104-66322012000200007info:eu-repo/semantics/openAccessLi,ShaobaiMa,YouguangFu,TaotaoZhu,ChunyingLi,Huaizhieng2012-06-21T00:00:00Zoai:scielo:S0104-66322012000200007Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2012-06-21T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false
dc.title.none.fl_str_mv The viscosity distribution around a rising bubble in shear-thinning non-newtonian fluids
title The viscosity distribution around a rising bubble in shear-thinning non-newtonian fluids
spellingShingle The viscosity distribution around a rising bubble in shear-thinning non-newtonian fluids
Li,Shaobai
Non-Newtonian fluid
Bubble
Viscosity distribution
Shear-thinning effect
title_short The viscosity distribution around a rising bubble in shear-thinning non-newtonian fluids
title_full The viscosity distribution around a rising bubble in shear-thinning non-newtonian fluids
title_fullStr The viscosity distribution around a rising bubble in shear-thinning non-newtonian fluids
title_full_unstemmed The viscosity distribution around a rising bubble in shear-thinning non-newtonian fluids
title_sort The viscosity distribution around a rising bubble in shear-thinning non-newtonian fluids
author Li,Shaobai
author_facet Li,Shaobai
Ma,Youguang
Fu,Taotao
Zhu,Chunying
Li,Huaizhi
author_role author
author2 Ma,Youguang
Fu,Taotao
Zhu,Chunying
Li,Huaizhi
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Li,Shaobai
Ma,Youguang
Fu,Taotao
Zhu,Chunying
Li,Huaizhi
dc.subject.por.fl_str_mv Non-Newtonian fluid
Bubble
Viscosity distribution
Shear-thinning effect
topic Non-Newtonian fluid
Bubble
Viscosity distribution
Shear-thinning effect
description The viscosity distribution of the liquid around a rising bubble in carboxymethyl cellulose (CMC) aqueous solutions was measured experimentally by particle image velocimetry (PIV). The effect of the concentration of CMC solutions on the viscosity distribution around a bubble and the coupling relations between the viscosity field, flow field and shear stress field were also studied. Results indicated that the specific viscosity (non-dimensionalized by η0) decreases with the increase in CMC solution concentration due to a shear thinning effect. Within the experimental range, similar viscosity distributions of liquids around a rising bubble were found: a hollow cylindrical low viscosity region around the bubble wake and a high viscosity region in the central bubble wake.
publishDate 2012
dc.date.none.fl_str_mv 2012-06-01
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=S0104-66322012000200007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322012000200007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0104-66322012000200007
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.29 n.2 2012
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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