Collective motion of granular matter subjected to swirling excitation
arXiv:2107.14440 · doi:10.1103/PhysRevE.105.L022902
Abstract
A two-dimensional granular packing under horizontally circular shaking exhibits various collective motion modes depending on the strength of the oscillation and the global packing density. For intermediate packing density and oscillation amplitude, a high density phase travels along the container's side wall in clockwise direction, while the oscillation itself is anti-clockwise. Further increasing packing density towards the hexagonal packing, the whole packing rotates collectively in clockwise direction. The core of the packing rotates as a solid and is separated from the boundary by a fluid-like layer. Both motion modes are associated with the asymmetric motion of particles close to the side wall.
arXiv comment9 pages, 2 figures
References in corpus (19)
- Novel type of phase transition in a system of self-driven particles
- Dynamical clustering and phase separation in suspensions of self-propelled colloidal particles
- Athermal Phase Separation of Self-Propelled Particles with no Alignment
- Statistical Mechanics of Interacting Run-and-Tumble Bacteria
- Patterns and Collective Behavior in Granular Media: Theoretical Concepts
- Long-lived Giant Number Fluctuations in a Swarming Granular Nematic
- Collective Motion of Vibrated Polar Disks
- Swarming and swirling in self-propelled polar granular rods
- Spontaneous velocity alignment in Motility-induced Phase Separation
- Revisiting the flocking transition using active spins
- A classical nucleation theory description of active colloid assembly
- Dynamics of spherical particles on a surface: About collision induced sliding and other effects
- Structure factors in granular experiments with homogeneous fluidization
- Cages and anomalous diffusion in vibrated dense granular media
- Fluctuating hydrodynamics and correlation lengths in a driven granular fluid
- Dynamical collective memory in fluidized granular materials
- Swirling Granular Matter: From Rotation to Reptation
- Spontaneous formation of density waves in granular matter under swirling excitation
- Geometric frustration induces the transition between rotation and counterrotation in swirled granular media