Granular size segregation in underwater sand ripples
Soft Condensed Matter
2007-05-23 v1 Materials Science
Abstract
We report an experimental study of a binary sand bed under an oscillating water flow. The formation and evolution of ripples is observed. The appearance of a granular segregation is shown to strongly depend on the sand bed preparation. The initial wavelength of the mixture is measured. In the final steady state, a segregation in volume is observed instead of a segregation at the surface as reported before. The correlation between this phenomenon and the fluid flow is emphasised. Finally, different ``exotic'' patterns and their geophysical implications are presented.
Cite
@article{arxiv.cond-mat/0403682,
title = {Granular size segregation in underwater sand ripples},
author = {G. Rousseaux and H. Caps and J. -E. Wesfreid},
journal= {arXiv preprint arXiv:cond-mat/0403682},
year = {2007}
}
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8 pages