Homogenization and dispersion in granular flows
Granular mixing in continuous flow conditions remains poorly understood. We investigate mixing in a 2D bidisperse granular system stirred by a rod in a chaotic flow; by tracking individual particles, we characterize exponential stretching, a hallmark of chaotic advection. Dispersion analysis reveals that the concentration field variance follows an exponential decay, confirming efficient mixing. Our results establish a link between granular mixing and fluid chaotic advection, suggesting that multidirectional shear enhances dispersion.
Authors
- Stéphanie Debœuf (ORCID: https://orcid.org/0000-0003-0377-0003)
- Klebbert Andrade (ORCID: https://orcid.org/0009-0003-2503-1639)
- Pierre Jop (ORCID: https://orcid.org/0000-0003-3527-2922)
- Évelyne Kolb (ORCID: https://orcid.org/0000-0002-5346-6635)
Institutions
- Saint-Gobain (France) (FR)
- Centre National de la Recherche Scientifique (FR)
- Sorbonne Université (FR)
- Institut Jean Le Rond d'Alembert (FR)
- Physique et Mécanique des Milieux Hétérogènes (FR)
- Surface du Verre et Interfaces (FR)
- Saint-Gobain Recherche Paris
- ESPCI Paris (FR)
Publication Details
- Journal
- EPJ Web of Conferences
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1051/epjconf/202534002017
- Primary Topic
- Granular flow and fluidized beds
- Type
- article
- Field-Weighted Citation Impact
- 0.00