Journal article 1444 views 168 downloads
Pattern formation of frictional fingers in a gravitational potential
Jon Alm Eriksen,
Renaud Toussaint,
Knut Jørgen Måløy,
Eirik Flekkøy,
Olivier Galland,
Bjornar Sandnes 
Physical Review Fluids, Volume: 3, Issue: 1
Swansea University Author:
Bjornar Sandnes
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DOI (Published version): 10.1103/physrevfluids.3.013801
Abstract
Aligned finger structures, with a characteristic width, emerge during the slow drainage of a liquid-granular mixture in a tilted Hele-Shaw cell. A transition from vertical to horizontal alignment of the finger structures is observed as the tilting angle and the granular density are varied. An analyt...
| Published in: | Physical Review Fluids |
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| ISSN: | 2469-990X 2469-990X |
| Published: |
American Physical Society (APS)
2018
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa37942 |
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| Abstract: |
Aligned finger structures, with a characteristic width, emerge during the slow drainage of a liquid-granular mixture in a tilted Hele-Shaw cell. A transition from vertical to horizontal alignment of the finger structures is observed as the tilting angle and the granular density are varied. An analytical model is presented, demonstrating that the alignment properties are the result of the competition between fluctuating granular stresses and the hydrostatic pressure. The dynamics is reproduced in simulations. We also show how the system explains patterns observed in nature, created during the early stages of a dike formation. |
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| College: |
Faculty of Science and Engineering |
| Issue: |
1 |