Influence of Particle Shape on Granular Column Collapse by Three-Dimensional DEM

In this paper, a numerical investigation on the collapse of axisymmetric granular columns has been conducted using three-dimensional discrete element method. Three different initial particle shapes are considered in simulations. The final deposit morphologies for different initial conditions are compared each other in terms of final height and run-out distance, and also compared to experimental observations. It can be concluded that granular column with more elongated particle shapes can reduce the angular velocities of particles, arise the final height and reduce the run-out distance by comparing to pure spherical particles.