Pattern formation of frictional fingers in a gravitational potential
Fluid Dynamics
2018-01-10 v2 Adaptation and Self-Organizing Systems
Abstract
Aligned finger structures, with a characteristic width, emerges 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 is 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 made during dyke formations.
Keywords
Cite
@article{arxiv.1605.07436,
title = {Pattern formation of frictional fingers in a gravitational potential},
author = {Jon Alm Eriksen and Renaud Toussaint and Knut Jørgen Måløy and Eirik Flekkøy and Bjørnar Sandnes},
journal= {arXiv preprint arXiv:1605.07436},
year = {2018}
}
Comments
20 pages, 6 figures