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Bubbles breaking the wall: Two-dimensional stress and stability analysis / Jon Alm Eriksen, Benjy Marks, Bjørnar Sandnes, Renaud Toussaint, Bjornar Sandnes

Physical Review E, Volume: 91, Issue: 5

Swansea University Author: Bjornar Sandnes

Abstract

Suspensions can be deformed through rearrangement of grains during the motion of a gas-liquid interface. Regions of jammed beads at the interface, can lead to intermittent behavior in the dynamics. We study the stability of layers of saturated jammed beads around stuck air bubbles, and the deformati...

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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/cronfa21343
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spelling 2019-09-18T16:06:30.7635691 v2 21343 2015-05-13 Bubbles breaking the wall: Two-dimensional stress and stability analysis 61c7c04b5c804d9402caf4881e85234b 0000-0002-4854-5857 Bjornar Sandnes Bjornar Sandnes true false 2015-05-13 CHEG Suspensions can be deformed through rearrangement of grains during the motion of a gas-liquid interface. Regions of jammed beads at the interface, can lead to intermittent behavior in the dynamics. We study the stability of layers of saturated jammed beads around stuck air bubbles, and the deformation mechanism leading to air channel formations in these layers. We describe a two-dimensional extension of a previous model of the eective stress in the jammed packing. We discuss how the tangential stress component alters the yield stress, in particular how arching eects may impact the yield threshold. We further develop a linear stability analysis, to study undulations which develop under certain experimental conditions at the air-liquid interface. The linear analysis gives estimates for the most unstable wavelengths for the initial growth of the perturbations. The estimates correspond well with peak to peak length measurements of the experimentally observed undulations. Journal Article Physical Review E 91 5 1539-3755 1550-2376 Granular matter, pattern formation, multiphase flow, force chains, stress, linear stability analysis, DEM 26 5 2015 2015-05-26 10.1103/PhysRevE.91.052204 http://journals.aps.org/pre/abstract/10.1103/PhysRevE.91.052204 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2019-09-18T16:06:30.7635691 2015-05-13T09:12:03.3560943 College of Engineering Engineering Jon Alm Eriksen 1 Benjy Marks 2 Bjørnar Sandnes 3 Renaud Toussaint 4 Bjornar Sandnes 0000-0002-4854-5857 5 0021343-13052015110449.pdf buckling_final.pdf 2015-05-13T11:04:49.0470000 Output 4027311 application/pdf Accepted Manuscript true 2015-05-13T00:00:00.0000000 false
title Bubbles breaking the wall: Two-dimensional stress and stability analysis
spellingShingle Bubbles breaking the wall: Two-dimensional stress and stability analysis
Bjornar, Sandnes
title_short Bubbles breaking the wall: Two-dimensional stress and stability analysis
title_full Bubbles breaking the wall: Two-dimensional stress and stability analysis
title_fullStr Bubbles breaking the wall: Two-dimensional stress and stability analysis
title_full_unstemmed Bubbles breaking the wall: Two-dimensional stress and stability analysis
title_sort Bubbles breaking the wall: Two-dimensional stress and stability analysis
author_id_str_mv 61c7c04b5c804d9402caf4881e85234b
author_id_fullname_str_mv 61c7c04b5c804d9402caf4881e85234b_***_Bjornar, Sandnes
author Bjornar, Sandnes
author2 Jon Alm Eriksen
Benjy Marks
Bjørnar Sandnes
Renaud Toussaint
Bjornar Sandnes
format Journal article
container_title Physical Review E
container_volume 91
container_issue 5
publishDate 2015
institution Swansea University
issn 1539-3755
1550-2376
doi_str_mv 10.1103/PhysRevE.91.052204
college_str College of Engineering
hierarchytype
hierarchy_top_id collegeofengineering
hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
url http://journals.aps.org/pre/abstract/10.1103/PhysRevE.91.052204
document_store_str 1
active_str 0
description Suspensions can be deformed through rearrangement of grains during the motion of a gas-liquid interface. Regions of jammed beads at the interface, can lead to intermittent behavior in the dynamics. We study the stability of layers of saturated jammed beads around stuck air bubbles, and the deformation mechanism leading to air channel formations in these layers. We describe a two-dimensional extension of a previous model of the eective stress in the jammed packing. We discuss how the tangential stress component alters the yield stress, in particular how arching eects may impact the yield threshold. We further develop a linear stability analysis, to study undulations which develop under certain experimental conditions at the air-liquid interface. The linear analysis gives estimates for the most unstable wavelengths for the initial growth of the perturbations. The estimates correspond well with peak to peak length measurements of the experimentally observed undulations.
published_date 2015-05-26T03:34:56Z
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score 10.843338