Journal article 1075 views 135 downloads
Self-Structuring of Granular material under Capillary Bulldozing
Guillaume Dumazer,
Bjørnar Sandnes,
Monem Ayaz,
Knut Jørgen Måløy,
Eirik Flekkøy,
Bjornar Sandnes 
EPJ Web of Conferences, Volume: 140, Start page: 09016
Swansea University Author:
Bjornar Sandnes
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DOI (Published version): 10.1051/epjconf/201714009016
Abstract
An experimental observation of the structuring of a granular suspension under the progress of a gas/liquid meniscus in a narrow tube is reported here. The granular material is moved and compactifies as a growing accumulation front. The frictional interaction with the confining walls increases until...
| Published in: | EPJ Web of Conferences |
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| ISSN: | 2100-014X |
| Published: |
2017
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa34575 |
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| Abstract: |
An experimental observation of the structuring of a granular suspension under the progress of a gas/liquid meniscus in a narrow tube is reported here. The granular material is moved and compactifies as a growing accumulation front. The frictional interaction with the confining walls increases until the pore capillary entry pressure is reached. The gas then penetrates the clogged granular packing and a further accumulation front is formed at the far side of the plug. This cyclic process continues until the gas/liquid interface reaches the tube’s outlet, leaving a trail of plugs in the tube. Such 1D pattern formation belongs to a larger family of patterning dynamics observed in 2D Hele-Shaw geometry. The cylindrical geometry considered here provides an ideal case for a theoretical modelling for forced granular matter oscillating between a long frictional phase and a sudden viscous fluidization. |
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| College: |
Faculty of Science and Engineering |
| Start Page: |
09016 |