Granular fingers in Hele-Shaw experiments
Statistical Mechanics
2009-09-25 v3 Astrophysics
Pattern Formation and Solitons
Fluid Dynamics
Abstract
Granular materials constitute an intermediate state of matter between fluids and solids. Here we investigate the pattern formation when a grain is displaced by another type of grain in a radial Hele-Shaw cell. We show that several morphologies can occur, ranging from rounded to fingered patterns, interconnected by a continuous crossover. Fourier analyses shows that, in contrast to the rounded patterns, the fingered shapes present mode selection.
Cite
@article{arxiv.cond-mat/0012441,
title = {Granular fingers in Hele-Shaw experiments},
author = {M. S. Couto and M. L. Martins and S. G. Alves},
journal= {arXiv preprint arXiv:cond-mat/0012441},
year = {2009}
}
Comments
LaTeX, 7 pages, 5 figures