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Frictional Fluid Dynamics and Plug Formation in Multiphase Millifluidic Flow

Guillaume Dumazer, Bjornar Sandnes Orcid Logo, Monem Ayaz, Knut Jørgen Måløy, Eirik Grude Flekkøy

Physical Review Letters, Volume: 117, Issue: 2

Swansea University Author: Bjornar Sandnes Orcid Logo

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DOI (Published version): 10.1103/PhysRevLett.117.028002

Abstract

We study experimentally the flow and patterning of a granular suspension displaced by air inside a narrow tube. The invading air-liquid interface accumulates a plug of granular material that clogs the tube due to friction with the confining walls. The gas percolates through the static plug once the...

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Published in: Physical Review Letters
ISSN: 0031-9007 1079-7114
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa28884
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first_indexed 2016-06-15T13:04:20Z
last_indexed 2020-07-20T12:45:18Z
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spelling 2020-07-20T10:20:47.1674683 v2 28884 2016-06-15 Frictional Fluid Dynamics and Plug Formation in Multiphase Millifluidic Flow 61c7c04b5c804d9402caf4881e85234b 0000-0002-4854-5857 Bjornar Sandnes Bjornar Sandnes true false 2016-06-15 CHEG We study experimentally the flow and patterning of a granular suspension displaced by air inside a narrow tube. The invading air-liquid interface accumulates a plug of granular material that clogs the tube due to friction with the confining walls. The gas percolates through the static plug once the gas pressure exceeds the pore capillary entry pressure of the packed grains, and a moving accumulation front is reestablished at the far side of the plug. The process repeats, such that the advancing interface leaves a trail of plugs in its wake. Further, we show that the system undergoes a fluidization transition—and complete evacuation of the granular suspension—when the liquid withdrawal rate increases beyond a critical value. An analytical model of the stability condition for the granular accumulation predicts the flow regime. Journal Article Physical Review Letters 117 2 0031-9007 1079-7114 Frictional fluids, pattern formation, conveying, plug formation, multiphase flow, granular materials, complex flow 7 7 2016 2016-07-07 10.1103/PhysRevLett.117.028002 http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.117.028002 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2020-07-20T10:20:47.1674683 2016-06-15T10:21:39.2223320 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Guillaume Dumazer 1 Bjornar Sandnes 0000-0002-4854-5857 2 Monem Ayaz 3 Knut Jørgen Måløy 4 Eirik Grude Flekkøy 5 0028884-15062016103030.pdf dumazer2016plugs_accepted.pdf 2016-06-15T10:30:30.0630000 Output 562132 application/pdf Accepted Manuscript true 2016-06-15T00:00:00.0000000 true
title Frictional Fluid Dynamics and Plug Formation in Multiphase Millifluidic Flow
spellingShingle Frictional Fluid Dynamics and Plug Formation in Multiphase Millifluidic Flow
Bjornar Sandnes
title_short Frictional Fluid Dynamics and Plug Formation in Multiphase Millifluidic Flow
title_full Frictional Fluid Dynamics and Plug Formation in Multiphase Millifluidic Flow
title_fullStr Frictional Fluid Dynamics and Plug Formation in Multiphase Millifluidic Flow
title_full_unstemmed Frictional Fluid Dynamics and Plug Formation in Multiphase Millifluidic Flow
title_sort Frictional Fluid Dynamics and Plug Formation in Multiphase Millifluidic Flow
author_id_str_mv 61c7c04b5c804d9402caf4881e85234b
author_id_fullname_str_mv 61c7c04b5c804d9402caf4881e85234b_***_Bjornar Sandnes
author Bjornar Sandnes
author2 Guillaume Dumazer
Bjornar Sandnes
Monem Ayaz
Knut Jørgen Måløy
Eirik Grude Flekkøy
format Journal article
container_title Physical Review Letters
container_volume 117
container_issue 2
publishDate 2016
institution Swansea University
issn 0031-9007
1079-7114
doi_str_mv 10.1103/PhysRevLett.117.028002
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/prl/abstract/10.1103/PhysRevLett.117.028002
document_store_str 1
active_str 0
description We study experimentally the flow and patterning of a granular suspension displaced by air inside a narrow tube. The invading air-liquid interface accumulates a plug of granular material that clogs the tube due to friction with the confining walls. The gas percolates through the static plug once the gas pressure exceeds the pore capillary entry pressure of the packed grains, and a moving accumulation front is reestablished at the far side of the plug. The process repeats, such that the advancing interface leaves a trail of plugs in its wake. Further, we show that the system undergoes a fluidization transition—and complete evacuation of the granular suspension—when the liquid withdrawal rate increases beyond a critical value. An analytical model of the stability condition for the granular accumulation predicts the flow regime.
published_date 2016-07-07T03:35:15Z
_version_ 1763751509555675136
score 11.037166

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