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Hydrodynamic shear thickening of particulate suspension under confinement

Xin Bian, Sergey Litvinov, Marco Ellero, Norman J. Wagner

Journal of Non-Newtonian Fluid Mechanics, Volume: 213, Pages: 39 - 49

Swansea University Author: Marco Ellero

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DOI (Published version): 10.1016/j.jnnfm.2014.09.003

Abstract

We study the rheology of dense suspensions of non-Brownian repulsive particles. The suspensions consist of two-dimensional discoidal particles confined by walls orthogonal to the shear gradient direction and are simulated by the method of smoothed particle hydrodynamics. The strength of hydrodynamic...

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Published in: Journal of Non-Newtonian Fluid Mechanics
ISSN: 0377-0257
Published: 2014
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URI: https://cronfa.swan.ac.uk/Record/cronfa25440
first_indexed 2016-01-08T01:53:31Z
last_indexed 2018-02-09T05:06:19Z
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spelling 2017-07-05T09:00:50.5289224 v2 25440 2016-01-07 Hydrodynamic shear thickening of particulate suspension under confinement 84f2af0791d38bdbf826728de7e5c69d Marco Ellero Marco Ellero true false 2016-01-07 We study the rheology of dense suspensions of non-Brownian repulsive particles. The suspensions consist of two-dimensional discoidal particles confined by walls orthogonal to the shear gradient direction and are simulated by the method of smoothed particle hydrodynamics. The strength of hydrodynamic shear thickening is primarily determined by the distribution of hydrodynamic clusters formed during shear flow while confinement plays a geometrical role and indirectly affects viscosity. Under strong confinement a percolating network of clusters develops into a jamming structure at high shear rate and as a result, the viscosity increases substantially. Extrapolating the viscosity to the limit of very weak confinement shows that confinement is essential to observe hydrodynamic shear thickening in these non-Brownian suspensions. Journal Article Journal of Non-Newtonian Fluid Mechanics 213 39 49 0377-0257 Continuous/hydrodynamic shear thickening, Wall confinement, Hydrodynamic clusters, SPH simulation 18 9 2014 2014-09-18 10.1016/j.jnnfm.2014.09.003 COLLEGE NANME COLLEGE CODE Swansea University 2017-07-05T09:00:50.5289224 2016-01-07T10:55:36.5066924 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Xin Bian 1 Sergey Litvinov 2 Marco Ellero 3 Norman J. Wagner 4
title Hydrodynamic shear thickening of particulate suspension under confinement
spellingShingle Hydrodynamic shear thickening of particulate suspension under confinement
Marco Ellero
title_short Hydrodynamic shear thickening of particulate suspension under confinement
title_full Hydrodynamic shear thickening of particulate suspension under confinement
title_fullStr Hydrodynamic shear thickening of particulate suspension under confinement
title_full_unstemmed Hydrodynamic shear thickening of particulate suspension under confinement
title_sort Hydrodynamic shear thickening of particulate suspension under confinement
author_id_str_mv 84f2af0791d38bdbf826728de7e5c69d
author_id_fullname_str_mv 84f2af0791d38bdbf826728de7e5c69d_***_Marco Ellero
author Marco Ellero
author2 Xin Bian
Sergey Litvinov
Marco Ellero
Norman J. Wagner
format Journal article
container_title Journal of Non-Newtonian Fluid Mechanics
container_volume 213
container_start_page 39
publishDate 2014
institution Swansea University
issn 0377-0257
doi_str_mv 10.1016/j.jnnfm.2014.09.003
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 We study the rheology of dense suspensions of non-Brownian repulsive particles. The suspensions consist of two-dimensional discoidal particles confined by walls orthogonal to the shear gradient direction and are simulated by the method of smoothed particle hydrodynamics. The strength of hydrodynamic shear thickening is primarily determined by the distribution of hydrodynamic clusters formed during shear flow while confinement plays a geometrical role and indirectly affects viscosity. Under strong confinement a percolating network of clusters develops into a jamming structure at high shear rate and as a result, the viscosity increases substantially. Extrapolating the viscosity to the limit of very weak confinement shows that confinement is essential to observe hydrodynamic shear thickening in these non-Brownian suspensions.
published_date 2014-09-18T12:48:25Z
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score 11.048149

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