Density distribution of particles upon jamming after an avalanche in a 2D silo

TL;DR

This study analyzes how particle density varies in a 2D silo after discharge, using simulations to understand the effects of compaction and clogging on the final particle distribution.

Contribution

It provides a detailed simulation-based analysis of particle density distribution after silo discharge, highlighting the influence of compaction degree.

Findings

Density depression propagates from the opening throughout the system.

Higher compaction degree affects the distribution pattern.

Clogging and discharge dynamics influence final particle arrangements.

Abstract

We present a complete analysis of the density distribution of particles in a two dimensional silo after discharge. Simulations through a pseudo-dynamic algorithm are performed for filling and subsequent discharge of a plane silo. Particles are monosized hard disks deposited in the container and subjected to a tapping process for compaction. Then, a hole of a given size is open at the bottom of the silo and the discharge is triggered. After a clogging at the opening is produced, and equilibrium is restored, the final distribution of the remaining particles at the silo is analyzed by dividing the space into cells with different geometrical arrangements to visualize the way in which the density depression near the opening is propagated throughout the system. The different behavior as a function of the compaction degree is discussed.