https://doi.org/10.1051/epjconf/202124903045
Modulated segregation of a bidisperse granular mixture due to recirculation currents
1
SVI (Surface du Verre et Interfaces), CNRS/SAINT-GOBAIN RESEARCH PARIS, 93300 Aubervilliers, France
2
PMMH (Physique et Mécanique des Milieux Hétérogènes), UMR 7636, 75005, Paris, France
3
Institut Jean Le Rond d’Alembert, Place Jussieu 75252 Paris Cedex 05, Paris, France
* Corresponding author: kwami.mayeden@saint-gobain.com
Published online: 7 June 2021
A bidisperse medium of large sand particles and small glass beads is mixed in a cylindrical vessel that is put in rotational motion around an eccentric static rod. The subsequent segregation occurring in the system is investigated primarily at the free-surface where the large particles concentration globally increases towards a limit value while oscillating. In order to gain deeper understanding of the intrinsic mechanisms causing the segregation, we also explore the dynamics in the bulk. Average residual bulk displacements fields both vertically and orthoradially could then be measured and show a secondary flow that counteracts the segregation process.
A video is available at https://doi.org/10.48448/nqpz-3150
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
