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Pattern formation of frictional fingers in a gravitational potential

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

Physical Review Fluids, Volume: 3, Issue: 1

Swansea University Author: Bjornar Sandnes Orcid Logo

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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...

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Published in: Physical Review Fluids
ISSN: 2469-990X 2469-990X
Published: American Physical Society (APS) 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa37942
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first_indexed 2018-01-05T14:28:32Z
last_indexed 2023-01-11T14:13:30Z
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spelling 2022-12-05T13:25:46.6617472 v2 37942 2018-01-05 Pattern formation of frictional fingers in a gravitational potential 61c7c04b5c804d9402caf4881e85234b 0000-0002-4854-5857 Bjornar Sandnes Bjornar Sandnes true false 2018-01-05 CHEG 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. Journal Article Physical Review Fluids 3 1 American Physical Society (APS) 2469-990X 2469-990X 3 1 2018 2018-01-03 10.1103/physrevfluids.3.013801 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2022-12-05T13:25:46.6617472 2018-01-05T10:08:46.2649620 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 Olivier Galland 5 Bjornar Sandnes 0000-0002-4854-5857 6 0037942-09012018160658.pdf eriksen2018.pdf 2018-01-09T16:06:58.5400000 Output 9287467 application/pdf Accepted Manuscript true 2018-01-09T00:00:00.0000000 true eng
title Pattern formation of frictional fingers in a gravitational potential
spellingShingle Pattern formation of frictional fingers in a gravitational potential
Bjornar Sandnes
title_short Pattern formation of frictional fingers in a gravitational potential
title_full Pattern formation of frictional fingers in a gravitational potential
title_fullStr Pattern formation of frictional fingers in a gravitational potential
title_full_unstemmed Pattern formation of frictional fingers in a gravitational potential
title_sort Pattern formation of frictional fingers in a gravitational potential
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
Olivier Galland
Bjornar Sandnes
format Journal article
container_title Physical Review Fluids
container_volume 3
container_issue 1
publishDate 2018
institution Swansea University
issn 2469-990X
2469-990X
doi_str_mv 10.1103/physrevfluids.3.013801
publisher American Physical Society (APS)
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
document_store_str 1
active_str 0
description 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.
published_date 2018-01-03T03:47:54Z
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score 11.016235

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