Dense bubble flow in a silo: an unusual flow of a dispersed medium
Soft Condensed Matter
2007-05-23 v2 Statistical Mechanics
Abstract
The dense flow of air bubbles in a two-dimensional silo (through an aperture D) filled with a liquid is studied experimentally. A particle tracking technique has been used to bring out the main properties of the flow: displacements of the bubbles, transverse and axial velocities. The behavior of the air bubbles is observed to present similarities with non-deformable solid grains in a granular flow. Nevertheless, a correlation between the bubble velocities and their deformations has been evidenced. Moreover, a new discharge law (Beverloo-like) must be considered for such a system, where the flow rate is observed to vary as D^{1/2} and depends on the deformability of the particles.
Cite
@article{arxiv.cond-mat/0508296,
title = {Dense bubble flow in a silo: an unusual flow of a dispersed medium},
author = {Yann Bertho and Christophe Becco and Nicolas Vandewalle},
journal= {arXiv preprint arXiv:cond-mat/0508296},
year = {2007}
}
Comments
5 pages, 6 figures