From Flow to Jamming: Lattice Gas Automaton Simulations in Granular Materials

TL;DR

This paper extends a Lattice Gas Automaton model to simulate granular materials, capturing complex phenomena like jamming transitions influenced by gravity, dissipation, and wall friction, thus improving understanding of granular dynamics.

Contribution

It introduces novel extensions to LGA models to accurately simulate jamming and flow behaviors in granular materials, including effects of gravity and dissipation.

Findings

Successfully reproduces flow rate evolution and density wave formation.

Identifies critical density for jamming transition.

Provides new insights into granular jamming behavior.

Abstract

We introduce the first extension of a Lattice Gas Automaton (LGA) model to accurately replicate observed emergent phenomena in granular materials with a special focus on previously unexplored jamming transitions by incorporating gravitational effects, energy dissipation in particle collisions, and wall friction. We successfully reproduce flow rate evolution, density wave formation, and jamming transition observed in experiments. We also explore the critical density at which jamming becomes probable. This research advances our understanding of granular dynamics and offers insights into the jamming behavior of granular materials.