On the rising and sinking of granular bubbles and droplets
Soft Condensed Matter
2022-08-10 v1
Abstract
Recently, the existence of so-called granular bubbles and droplets has been demonstrated experimentally. Granular bubbles and droplets are clusters of particles that respectively rise and sink if submerged in an aerated and vibrated bed of another granular material of different size and/or density. However, currently there is no model that explains the coherent motion of these clusters and predicts the transition between a rising and sinking motion. Here, we propose an analytical model predicting accurately the neutral buoyancy limit of a granular bubble/droplet. This model allows the compilation of a regime map identifying five distinct regimes of granular bubble/droplet motion.
Keywords
Cite
@article{arxiv.2110.08120,
title = {On the rising and sinking of granular bubbles and droplets},
author = {Jens P. Metzger and Louis Girardin and Nicholas A. Conzelmann and Christoph R. Müller},
journal= {arXiv preprint arXiv:2110.08120},
year = {2022}
}