Still water: dead zones and collimated ejecta from the impact of granular jets
Fluid Dynamics
2013-11-04 v1
Abstract
When a dense granular jet hits a target, it forms a large dead zone and ejects a highly collimated conical sheet with a well-defined opening angle. Using experiments, simulations, and continuum modeling, we find that this opening angle is insensitive to the precise target shape and the dissipation mechanisms in the flow. We show that this surprising insensitivity arises because dense granular jet impact, though highly dissipative, is nonetheless controlled by the limit of perfect fluid flow.
Keywords
Cite
@article{arxiv.1304.4671,
title = {Still water: dead zones and collimated ejecta from the impact of granular jets},
author = {Jake Ellowitz and Herve Turlier and Nicholas Guttenberg and Wendy W. Zhang and Sidney R. Nagel},
journal= {arXiv preprint arXiv:1304.4671},
year = {2013}
}
Comments
5 pages, 5 figures, submitted to Physical Review Letters