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Extracting extensional properties through excess pressure drop estimation in axisymmetric contraction and expansion flows for constant shear viscosity, extension strain-hardening fluids

Magda Nyström, Hamid R. Tamaddon Jahromi, Mats Stading, Michael Webster Orcid Logo, Hamid Tamaddon-Jahromi

Rheologica Acta, Volume: 55, Issue: 5, Pages: 373 - 396

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

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DOI (Published version): 10.1007/s00397-016-0924-9

Abstract

In this study, hyperbolic contraction-expansion flow (HCF) devices have been investigated with the specific aim of devising new experimental measuring systems for extensional rheological properties. To this end, a hyperbolic contraction-expansion configuration has been designed to minimize the influ...

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Published in: Rheologica Acta
Published: 2016
URI: https://cronfa.swan.ac.uk/Record/cronfa27560
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first_indexed 2016-04-30T01:13:04Z
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spelling 2019-05-07T15:10:06.0857003 v2 27560 2016-04-29 Extracting extensional properties through excess pressure drop estimation in axisymmetric contraction and expansion flows for constant shear viscosity, extension strain-hardening fluids b6a811513b34d56e66489512fc2c6c61 0000-0002-7722-821X Michael Webster Michael Webster true false b3a1417ca93758b719acf764c7ced1c5 Hamid Tamaddon-Jahromi Hamid Tamaddon-Jahromi true false 2016-04-29 EEN In this study, hyperbolic contraction-expansion flow (HCF) devices have been investigated with the specific aim of devising new experimental measuring systems for extensional rheological properties. To this end, a hyperbolic contraction-expansion configuration has been designed to minimize the influence of shear in the flow. Experiments have been conducted using well-characterized model fluids, alongside simulations using a viscoelastic White-Metzner/FENE-CR model and finite element/finite volume analysis. Here, the application of appropriate rheological models to reproduce quantitative pressure-drop predictions for constant shear-viscosity fluids has been investigated, in order to extract the relevant extensional properties for the various test fluids in question. Accordingly, experimental evaluation of the hyperbolic contraction-expansion configuration has shown rising corrected pressure-drops with increasing elastic behaviour (De=0~16), evidence which has been corroborated through numerical prediction. Moreover, theoretical to predicted solution correspondence has been established between extensional viscosity and first-normal stress-difference. This leads to a practical means to measure extensional viscosity for elastic fluids, obtained through the derived pressure-drop data in these HCF devices. Journal Article Rheologica Acta 55 5 373 396 31 5 2016 2016-05-31 10.1007/s00397-016-0924-9 COLLEGE NANME Engineering COLLEGE CODE EEN Swansea University 2019-05-07T15:10:06.0857003 2016-04-29T15:01:02.9409459 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Magda Nyström 1 Hamid R. Tamaddon Jahromi 2 Mats Stading 3 Michael Webster 0000-0002-7722-821X 4 Hamid Tamaddon-Jahromi 5
title Extracting extensional properties through excess pressure drop estimation in axisymmetric contraction and expansion flows for constant shear viscosity, extension strain-hardening fluids
spellingShingle Extracting extensional properties through excess pressure drop estimation in axisymmetric contraction and expansion flows for constant shear viscosity, extension strain-hardening fluids
Michael Webster
Hamid Tamaddon-Jahromi
title_short Extracting extensional properties through excess pressure drop estimation in axisymmetric contraction and expansion flows for constant shear viscosity, extension strain-hardening fluids
title_full Extracting extensional properties through excess pressure drop estimation in axisymmetric contraction and expansion flows for constant shear viscosity, extension strain-hardening fluids
title_fullStr Extracting extensional properties through excess pressure drop estimation in axisymmetric contraction and expansion flows for constant shear viscosity, extension strain-hardening fluids
title_full_unstemmed Extracting extensional properties through excess pressure drop estimation in axisymmetric contraction and expansion flows for constant shear viscosity, extension strain-hardening fluids
title_sort Extracting extensional properties through excess pressure drop estimation in axisymmetric contraction and expansion flows for constant shear viscosity, extension strain-hardening fluids
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 Magda Nyström
Hamid R. Tamaddon Jahromi
Mats Stading
Michael Webster
Hamid Tamaddon-Jahromi
format Journal article
container_title Rheologica Acta
container_volume 55
container_issue 5
container_start_page 373
publishDate 2016
institution Swansea University
doi_str_mv 10.1007/s00397-016-0924-9
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 In this study, hyperbolic contraction-expansion flow (HCF) devices have been investigated with the specific aim of devising new experimental measuring systems for extensional rheological properties. To this end, a hyperbolic contraction-expansion configuration has been designed to minimize the influence of shear in the flow. Experiments have been conducted using well-characterized model fluids, alongside simulations using a viscoelastic White-Metzner/FENE-CR model and finite element/finite volume analysis. Here, the application of appropriate rheological models to reproduce quantitative pressure-drop predictions for constant shear-viscosity fluids has been investigated, in order to extract the relevant extensional properties for the various test fluids in question. Accordingly, experimental evaluation of the hyperbolic contraction-expansion configuration has shown rising corrected pressure-drops with increasing elastic behaviour (De=0~16), evidence which has been corroborated through numerical prediction. Moreover, theoretical to predicted solution correspondence has been established between extensional viscosity and first-normal stress-difference. This leads to a practical means to measure extensional viscosity for elastic fluids, obtained through the derived pressure-drop data in these HCF devices.
published_date 2016-05-31T03:33:26Z
_version_ 1763751395299688448
score 11.012678

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