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

  • Rodolfo O. Uñac Departamento de Física, Instituto de Física Aplicada (UNSL-CONICET), Universidad Nacional de San Luis, Ejército de los Andes 950, D5700HHW San Luis, Argentina.
  • José L. Sales Departamento de Geofísica y Astronomía. Facultad de Ciencias Exactas Físicas y Naturales. Universidad Nacional de San Juan, Mitre 396 (E), J5402CWH San Juan, Argentina.
  • María V. Gargiulo Departamento de Geofísica y Astronomía. Facultad de Ciencias Exactas Físicas y Naturales. Universidad Nacional de San Juan, Mitre 396 (E), J5402CWH San Juan, Argentina.
  • Ana M. Vidales Departamento de Física, Instituto de Física Aplicada (UNSL-CONICET), Universidad Nacional de San Luis, Ejército de los Andes 950, D5700HHW San Luis, Argentina.
Keywords: Packing density, Silo discharge, Tapping

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.

Received: 9 December 2014,  Accepted: 13 April 2015; Edited by: L. A. Pugnaloni; Reviewed by: F. Vivanco, Dpto. de Física, Universidad de Santiago de Chile, Chile; DOI: http://dx.doi.org/10.4279/PIP.070007

Cite as: R. O. Uñac, J. L. Sales, M. V. Gargiulo, A. M. Vidales, Papers in Physics 7, 070007 (2015)

This paper, by R. O. Uñac, J. L. Sales, M. V. Gargiulo, A. M. Vidales, is licensed under the Creative Commons Attribution License 3.0.