Shocks in sand flowing in a silo
Soft Condensed Matter
2019-06-19 v1
Abstract
We study the formation of shocks on the surface of a granular material draining through an orifice at the bottom of a quasi-two dimensional silo. At high flow rates, the surface is observed to deviate strongly from a smooth linear inclined profile giving way to a sharp discontinuity in the height of the surface near the bottom of the incline, the typical response of a choking flow such as encountered in a hydraulic jump in a Newtonian fluid like water. We present experimental results that characterize the conditions for the existence of such a jump, describe its structure and give an explanation for its occurrence.
Cite
@article{arxiv.cond-mat/0110427,
title = {Shocks in sand flowing in a silo},
author = {Azadeh Samadani and L. Mahadevan and A. Kudrolli},
journal= {arXiv preprint arXiv:cond-mat/0110427},
year = {2019}
}
Comments
5 pages, 7 figures