DEM-MPS analysis and PTV measurement of granular motion in liquid

Abstract

A DEM-MPS coupled model for solid-liquid two phase flows is developed. Fluid motion is calculated for locally phase-averaged variables. The present model is applied to a collapse behavior of the assembly of aluminum particles in a rectangular container with and without liquid. The corresponding experiment is performed to validate the present model. The trajectory of each particle is traced by using the PTV (Particle Tracking Velocimetry) measurement. Calculated collapse behaviors agree well with the observed behaviors in the corresponding experiment. The calculated horizontal position of leading particle and particle velocity also agree well with the experimental results. © 2012 The Japan Society of Mechanical Engineers.