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Numerical approach to frictional fingers

Jon Alm Eriksen, Renaud Toussaint, Knut Jørgen Måløy, Eirik Flekkøy, Bjornar Sandnes Orcid Logo

Physical Review E, Volume: 92, Issue: 3

Swansea University Author: Bjornar Sandnes Orcid Logo

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DOI (Published version): 10.1103/PhysRevE.92.032203

Abstract

Experiments on confined multiphase flow systems, involving air and a dense suspension, have revealed a diverse set of flow morphologies. As the air displaces the suspension, the beads that make up the suspension can accumulate along the interface. The dynamics can generate “frictional fingers” of ai...

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Published in: Physical Review E
ISSN: 1539-3755 1550-2376
Published: 2015
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URI: https://cronfa.swan.ac.uk/Record/cronfa23521
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first_indexed 2015-10-01T02:09:34Z
last_indexed 2020-10-30T03:34:31Z
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spelling 2020-10-29T15:43:42.9551192 v2 23521 2015-09-30 Numerical approach to frictional fingers 61c7c04b5c804d9402caf4881e85234b 0000-0002-4854-5857 Bjornar Sandnes Bjornar Sandnes true false 2015-09-30 CHEG Experiments on confined multiphase flow systems, involving air and a dense suspension, have revealed a diverse set of flow morphologies. As the air displaces the suspension, the beads that make up the suspension can accumulate along the interface. The dynamics can generate “frictional fingers” of air coated by densely packed grains. We present here a simplified model for the dynamics together with a new numerical strategy for simulating the frictional finger behavior. We further make theoretical predictions for the characteristic width associated with the frictional fingers, based on the yield stress criterion, and compare these to experimental results. The agreement between theory and experiments validates our model and allows us to estimate the unknown parameter in the yield stress criterion, which we use in the simulations. Journal Article Physical Review E 92 3 1539-3755 1550-2376 Frictional fluid dynamics, fluid instabilities, granular materials, pattern formation, simulations 28 9 2015 2015-09-28 10.1103/PhysRevE.92.032203 http://journals.aps.org/pre/abstract/10.1103/PhysRevE.92.032203 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2020-10-29T15:43:42.9551192 2015-09-30T15:12:08.5396472 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Jon Alm Eriksen 1 Renaud Toussaint 2 Knut Jørgen Måløy 3 Eirik Flekkøy 4 Bjornar Sandnes 0000-0002-4854-5857 5 0023521-30092015152018.pdf Numerical_frictional_fingers.pdf 2015-09-30T15:20:18.8970000 Output 6255657 application/pdf Accepted Manuscript true 2015-09-30T00:00:00.0000000 false
title Numerical approach to frictional fingers
spellingShingle Numerical approach to frictional fingers
Bjornar Sandnes
title_short Numerical approach to frictional fingers
title_full Numerical approach to frictional fingers
title_fullStr Numerical approach to frictional fingers
title_full_unstemmed Numerical approach to frictional fingers
title_sort Numerical approach to frictional fingers
author_id_str_mv 61c7c04b5c804d9402caf4881e85234b
author_id_fullname_str_mv 61c7c04b5c804d9402caf4881e85234b_***_Bjornar Sandnes
author Bjornar Sandnes
author2 Jon Alm Eriksen
Renaud Toussaint
Knut Jørgen Måløy
Eirik Flekkøy
Bjornar Sandnes
format Journal article
container_title Physical Review E
container_volume 92
container_issue 3
publishDate 2015
institution Swansea University
issn 1539-3755
1550-2376
doi_str_mv 10.1103/PhysRevE.92.032203
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 - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
url http://journals.aps.org/pre/abstract/10.1103/PhysRevE.92.032203
document_store_str 1
active_str 0
description Experiments on confined multiphase flow systems, involving air and a dense suspension, have revealed a diverse set of flow morphologies. As the air displaces the suspension, the beads that make up the suspension can accumulate along the interface. The dynamics can generate “frictional fingers” of air coated by densely packed grains. We present here a simplified model for the dynamics together with a new numerical strategy for simulating the frictional finger behavior. We further make theoretical predictions for the characteristic width associated with the frictional fingers, based on the yield stress criterion, and compare these to experimental results. The agreement between theory and experiments validates our model and allows us to estimate the unknown parameter in the yield stress criterion, which we use in the simulations.
published_date 2015-09-28T03:27:44Z
_version_ 1763751037398679552
score 11.037275

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