Internal Waves Control Bulk Flow in Silos
Soft Condensed Matter
2025-12-22 v1 Fluid Dynamics
Abstract
We experimentally measure paticle acceleration within the bulk during the discharge of a granular silo. We highlight the existence of a deceleration wave emerging at the outlet level near the dead zone and propagates toward the top of the medium. The wave emission frequency is extracted from spatiotemporal diagrams of the Eulerian instantaneous acceleration profiles. Surprisingly, we find that this frequency decreases with the cohesion of the medium and is independent of the outlet size.
Keywords
Cite
@article{arxiv.2512.17686,
title = {Internal Waves Control Bulk Flow in Silos},
author = {David Luce and Adrien Gans and Nicolas Vandewalle and Sébastien Kiesgen de Richter},
journal= {arXiv preprint arXiv:2512.17686},
year = {2025}
}
Comments
5 pages, 6 figures