Purely Elastic Flow Asymmetries

Detalhes bibliográficos
Autor(a) principal: Poole, R. J.
Data de Publicação: 2007
Outros Autores: Alves, M. A., Oliveira, Paulo J.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.6/634
Resumo: Using a numerical technique we demonstrate that the flow of the simplest differential viscoelastic fluid model (i.e., the upper-convected Maxwell model) goes through a bifurcation to a steady asymmetric state when flowing in a perfectly symmetric ‘‘cross-slot’’ geometry. We show that this asymmetry is purely elastic in nature and that the effect of inertia is a stabilizing one. Our results are in qualitative agreement with very recent experimental visualizations of a similar flow in the microfluidic apparatus of Arratia et al. [Phys. Rev. Lett. 96, 144502 (2006)].
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spelling Purely Elastic Flow AsymmetriesElastic instabilitiesBifurcationCross-slotUCM modelUsing a numerical technique we demonstrate that the flow of the simplest differential viscoelastic fluid model (i.e., the upper-convected Maxwell model) goes through a bifurcation to a steady asymmetric state when flowing in a perfectly symmetric ‘‘cross-slot’’ geometry. We show that this asymmetry is purely elastic in nature and that the effect of inertia is a stabilizing one. Our results are in qualitative agreement with very recent experimental visualizations of a similar flow in the microfluidic apparatus of Arratia et al. [Phys. Rev. Lett. 96, 144502 (2006)].uBibliorumPoole, R. J.Alves, M. A.Oliveira, Paulo J.2010-04-28T10:07:34Z20072007-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.6/634enginfo: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:RCAAP2023-12-15T09:35:56Zoai:ubibliorum.ubi.pt:10400.6/634Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:42:41.396432Repositório 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 Purely Elastic Flow Asymmetries
title Purely Elastic Flow Asymmetries
spellingShingle Purely Elastic Flow Asymmetries
Poole, R. J.
Elastic instabilities
Bifurcation
Cross-slot
UCM model
title_short Purely Elastic Flow Asymmetries
title_full Purely Elastic Flow Asymmetries
title_fullStr Purely Elastic Flow Asymmetries
title_full_unstemmed Purely Elastic Flow Asymmetries
title_sort Purely Elastic Flow Asymmetries
author Poole, R. J.
author_facet Poole, R. J.
Alves, M. A.
Oliveira, Paulo J.
author_role author
author2 Alves, M. A.
Oliveira, Paulo J.
author2_role author
author
dc.contributor.none.fl_str_mv uBibliorum
dc.contributor.author.fl_str_mv Poole, R. J.
Alves, M. A.
Oliveira, Paulo J.
dc.subject.por.fl_str_mv Elastic instabilities
Bifurcation
Cross-slot
UCM model
topic Elastic instabilities
Bifurcation
Cross-slot
UCM model
description Using a numerical technique we demonstrate that the flow of the simplest differential viscoelastic fluid model (i.e., the upper-convected Maxwell model) goes through a bifurcation to a steady asymmetric state when flowing in a perfectly symmetric ‘‘cross-slot’’ geometry. We show that this asymmetry is purely elastic in nature and that the effect of inertia is a stabilizing one. Our results are in qualitative agreement with very recent experimental visualizations of a similar flow in the microfluidic apparatus of Arratia et al. [Phys. Rev. Lett. 96, 144502 (2006)].
publishDate 2007
dc.date.none.fl_str_mv 2007
2007-01-01T00:00:00Z
2010-04-28T10:07:34Z
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dc.language.iso.fl_str_mv eng
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