Kinetically constrained model for gravity-driven granular flow and clogging

Abstract

We add extreme driving to the Kob-Andersen kinetically-constrained lattice-gas model in order to mimic the effect of gravity on dense granular systems. For low particle densities, the current that develops in the system agrees at arbitrary field intensity with a mean field theory. At intermediate densities, spatial correlations give rise to non-monotonic dependence of the current on field intensity. At higher densities, the current ultimately vanishes at a finite, field-dependent jamming density. We supplement the study of this bulk behavior with an investigation of the current through a narrow hole. There, lateral flow decreases the local density in front of the hole. Remarkably, the current through the hole quantitatively agrees with a theoretical prediction based on the bulk current at the measured local density.

References in corpus (10)

• Non equilibrium steady states: fluctuations and large deviations of the density and of the current
• Macroscopic Facilitation of Glassy Relaxation Kinetics: Ultra Stable Glass Films with Front-Like Thermal Response
• Topological persistence and dynamical heterogeneities near jamming
• Asymmetric exclusion processes with constrained dynamics
• Bulk diffusion in a kinetically constrained lattice gas
• Driving kinetically constrained models into non-equilibrium steady states: structural and slow transport properties
• Spiral model, jamming percolation and glass-jamming transitions
• Hydrodynamics in kinetically-constrained lattice-gas models
• Jamming transition of kinetically-constrained models in rectangular systems
• Finite-density effects in the Fredrickson-Andersen and Kob-Andersen kinetically-constrained models

Cited by in corpus (2)

• Stretched exponential to power-law: crossover of relaxation in a kinetically constrained model
• Constraint relaxation leads to jamming