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Numerical modeling of thixotropic and viscoelastoplastic materials in complex flows

Jose Esteban López-Aguilar, Michael Webster Orcid Logo, Hamid Tamaddon Jahromi, Octavio Manero

Rheologica Acta, Volume: 54, Issue: 4, Pages: 307 - 325

Swansea University Authors: Michael Webster Orcid Logo, Hamid Tamaddon Jahromi

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DOI (Published version): 10.1007/s00397-014-0810-2

Abstract

This study is concerned with the numerical modelling of thixotropic and viscoelastoplastic material systems through two approaches: (i) a new micellar thixotropic constitutive model for worm-like micellar systems that introduces viscoelasticity into the network-structure construction/destruction kin...

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Published in: Rheologica Acta
Published: 2015
URI: https://cronfa.swan.ac.uk/Record/cronfa24182
first_indexed 2015-11-09T11:28:10Z
last_indexed 2018-02-09T05:03:40Z
id cronfa24182
recordtype SURis
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spelling 2017-03-01T17:03:24.6193447 v2 24182 2015-11-08 Numerical modeling of thixotropic and viscoelastoplastic materials in complex flows b6a811513b34d56e66489512fc2c6c61 0000-0002-7722-821X Michael Webster Michael Webster true false b3a1417ca93758b719acf764c7ced1c5 Hamid Tamaddon Jahromi Hamid Tamaddon Jahromi true false 2015-11-08 This study is concerned with the numerical modelling of thixotropic and viscoelastoplastic material systems through two approaches: (i) a new micellar thixotropic constitutive model for worm-like micellar systems that introduces viscoelasticity into the network-structure construction/destruction kinetic equation; and (ii) adopting a Bingham-Papanastasiou model. The appearance of plastic behaviour arises through the micellar-polymeric viscosity, by increasing the zero-shear viscosity (low solvent fractions), whilst the Bingham-Papanastasiou introduces plastic features through the solvent viscosity. The characteristics of thixotropic worm-like micellar systems are represented through the class of Bautista-Manero models. Correction is incorporated, based on physical arguments for fluidity, in which absolute values of the dissipation-function are adopted in complex flow, thereby accessing low-solvent fractions and high-elasticity levels. Considering elastic and plastic influence separately, solutions are compared and contrasted for contraction-expansion flow, identifying such flow field features as vortex dynamics, stress field structure, yield front patterns, and enhanced pressure drop. Particular attention is paid to the influence of enhanced strain-hardening that is introduced through stronger thixotropic structural features. The computational approach is based on a hybrid parent finite element/child finite volume (fe/fv) scheme, which is cast about a semi-implicit incremental pressure-correction (ipc) scheme. Journal Article Rheologica Acta 54 4 307 325 yield fronts, yield stress, wormlike micelles, Bautista-Manero models, hybrid finite element/volume method, enhanced oil-recovery, Papanastasiou regularisation 30 4 2015 2015-04-30 10.1007/s00397-014-0810-2 COLLEGE NANME COLLEGE CODE Swansea University 2017-03-01T17:03:24.6193447 2015-11-08T13:09:13.7944357 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Jose Esteban López-Aguilar 1 Michael Webster 0000-0002-7722-821X 2 Hamid Tamaddon Jahromi 3 Octavio Manero 4
title Numerical modeling of thixotropic and viscoelastoplastic materials in complex flows
spellingShingle Numerical modeling of thixotropic and viscoelastoplastic materials in complex flows
Michael Webster
Hamid Tamaddon Jahromi
title_short Numerical modeling of thixotropic and viscoelastoplastic materials in complex flows
title_full Numerical modeling of thixotropic and viscoelastoplastic materials in complex flows
title_fullStr Numerical modeling of thixotropic and viscoelastoplastic materials in complex flows
title_full_unstemmed Numerical modeling of thixotropic and viscoelastoplastic materials in complex flows
title_sort Numerical modeling of thixotropic and viscoelastoplastic materials in complex flows
author_id_str_mv b6a811513b34d56e66489512fc2c6c61
b3a1417ca93758b719acf764c7ced1c5
author_id_fullname_str_mv b6a811513b34d56e66489512fc2c6c61_***_Michael Webster
b3a1417ca93758b719acf764c7ced1c5_***_Hamid Tamaddon Jahromi
author Michael Webster
Hamid Tamaddon Jahromi
author2 Jose Esteban López-Aguilar
Michael Webster
Hamid Tamaddon Jahromi
Octavio Manero
format Journal article
container_title Rheologica Acta
container_volume 54
container_issue 4
container_start_page 307
publishDate 2015
institution Swansea University
doi_str_mv 10.1007/s00397-014-0810-2
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 0
active_str 0
description This study is concerned with the numerical modelling of thixotropic and viscoelastoplastic material systems through two approaches: (i) a new micellar thixotropic constitutive model for worm-like micellar systems that introduces viscoelasticity into the network-structure construction/destruction kinetic equation; and (ii) adopting a Bingham-Papanastasiou model. The appearance of plastic behaviour arises through the micellar-polymeric viscosity, by increasing the zero-shear viscosity (low solvent fractions), whilst the Bingham-Papanastasiou introduces plastic features through the solvent viscosity. The characteristics of thixotropic worm-like micellar systems are represented through the class of Bautista-Manero models. Correction is incorporated, based on physical arguments for fluidity, in which absolute values of the dissipation-function are adopted in complex flow, thereby accessing low-solvent fractions and high-elasticity levels. Considering elastic and plastic influence separately, solutions are compared and contrasted for contraction-expansion flow, identifying such flow field features as vortex dynamics, stress field structure, yield front patterns, and enhanced pressure drop. Particular attention is paid to the influence of enhanced strain-hardening that is introduced through stronger thixotropic structural features. The computational approach is based on a hybrid parent finite element/child finite volume (fe/fv) scheme, which is cast about a semi-implicit incremental pressure-correction (ipc) scheme.
published_date 2015-04-30T06:47:21Z
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score 11.212735

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