Velocity-jump instabilities in Hele-Shaw flow of associating polymer solutions

We study fracturelike flow instabilities that arise when water is injected into a Hele-Shaw cell filled with aqueous solutions of associating polymers. We explore various polymer architectures, molecular weights, and solution concentrations. Simultaneous measurements of the finger tip velocity and o...

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Detalles Bibliográficos
Autores: Vlad, D. H., Ignés i Mullol, Jordi, Maher, J. V.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:1999
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/18908
Acceso en línea:https://hdl.handle.net/2445/18908
Access Level:acceso abierto
Palabra clave:Dinàmica de fluids
Polímers
Fluid dynamics
Polymers
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spelling Velocity-jump instabilities in Hele-Shaw flow of associating polymer solutionsVlad, D. H.Ignés i Mullol, JordiMaher, J. V.Dinàmica de fluidsPolímersFluid dynamicsPolymersWe study fracturelike flow instabilities that arise when water is injected into a Hele-Shaw cell filled with aqueous solutions of associating polymers. We explore various polymer architectures, molecular weights, and solution concentrations. Simultaneous measurements of the finger tip velocity and of the pressure at the injection point allow us to describe the dynamics of the finger in terms of the finger mobility, which relates the velocity to the pressure gradient. The flow discontinuities, characterized by jumps in the finger tip velocity, which are observed in experiments with some of the polymer solutions, can be modeled by using a nonmonotonic dependence between a characteristic shear stress and the shear rate at the tip of the finger. A simple model, which is based on a viscosity function containing both a Newtonian and a non-Newtonian component, and which predicts nonmonotonic regions when the non-Newtonian component of the viscosity dominates, is shown to agree with the experimental data.The American Physical Society201120111999info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion8 p.application/pdfhttps://hdl.handle.net/2445/18908Articles publicats en revistes (Ciència dels Materials i Química Física)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.60.4423Physical Review E, 1999, vol. 60, núm. 4, p. 4423-4430http://dx.doi.org/10.1103/PhysRevE.60.4423(c) American Physical Society, 1999info:eu-repo/semantics/openAccessoai:recercat.cat:2445/189082026-05-29T05:05:01Z
dc.title.none.fl_str_mv Velocity-jump instabilities in Hele-Shaw flow of associating polymer solutions
title Velocity-jump instabilities in Hele-Shaw flow of associating polymer solutions
spellingShingle Velocity-jump instabilities in Hele-Shaw flow of associating polymer solutions
Vlad, D. H.
Dinàmica de fluids
Polímers
Fluid dynamics
Polymers
title_short Velocity-jump instabilities in Hele-Shaw flow of associating polymer solutions
title_full Velocity-jump instabilities in Hele-Shaw flow of associating polymer solutions
title_fullStr Velocity-jump instabilities in Hele-Shaw flow of associating polymer solutions
title_full_unstemmed Velocity-jump instabilities in Hele-Shaw flow of associating polymer solutions
title_sort Velocity-jump instabilities in Hele-Shaw flow of associating polymer solutions
dc.creator.none.fl_str_mv Vlad, D. H.
Ignés i Mullol, Jordi
Maher, J. V.
author Vlad, D. H.
author_facet Vlad, D. H.
Ignés i Mullol, Jordi
Maher, J. V.
author_role author
author2 Ignés i Mullol, Jordi
Maher, J. V.
author2_role author
author
dc.subject.none.fl_str_mv Dinàmica de fluids
Polímers
Fluid dynamics
Polymers
topic Dinàmica de fluids
Polímers
Fluid dynamics
Polymers
description We study fracturelike flow instabilities that arise when water is injected into a Hele-Shaw cell filled with aqueous solutions of associating polymers. We explore various polymer architectures, molecular weights, and solution concentrations. Simultaneous measurements of the finger tip velocity and of the pressure at the injection point allow us to describe the dynamics of the finger in terms of the finger mobility, which relates the velocity to the pressure gradient. The flow discontinuities, characterized by jumps in the finger tip velocity, which are observed in experiments with some of the polymer solutions, can be modeled by using a nonmonotonic dependence between a characteristic shear stress and the shear rate at the tip of the finger. A simple model, which is based on a viscosity function containing both a Newtonian and a non-Newtonian component, and which predicts nonmonotonic regions when the non-Newtonian component of the viscosity dominates, is shown to agree with the experimental data.
publishDate 1999
dc.date.none.fl_str_mv 1999
2011
2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/18908
url https://hdl.handle.net/2445/18908
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.60.4423
Physical Review E, 1999, vol. 60, núm. 4, p. 4423-4430
http://dx.doi.org/10.1103/PhysRevE.60.4423
dc.rights.none.fl_str_mv (c) American Physical Society, 1999
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Physical Society, 1999
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 8 p.
application/pdf
dc.publisher.none.fl_str_mv The American Physical Society
publisher.none.fl_str_mv The American Physical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Ciència dels Materials i Química Física)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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