Most geohazards and industrial processes are essentially gravity-driven dense granular
flows. Deep understanding of the effect of gravity on granular flow is of crucial importance in …

We investigate the motion of groups of intruders in a two-dimensional granular system by
using discrete numerical simulations. By imposing either a constant velocity or a thrusting …

In quasi-two-dimensional experiments with photoelastic particles confined to an annular
region, an intruder constrained to move in a circular path halfway between the annular walls …

The mechanical strength and flow of granular materials can depend strongly on the shapes
of individual grains. We report quantitative results obtained from photoelasticimetry …

We consider a system of granular particles, modeled by two dimensional frictional soft
elastic disks, that is exposed to externally applied time-dependent shear stress in a planar …

We analyze the flow and clogging of circular grains passing through a small aperture under
vibration in two dimensions. Via discrete element method simulations, we show that when …

We study the dynamics of an intruder moving through a fluidized granular medium in three
dimensions (d= 3). The intruder and grains have both translational and rotational degrees of …

When several intruders move in a granular medium, coupling effects are observed, the
motion of one intruder affecting that of others. In this paper, we investigate experimentally …

Experiments and simulations of an intruder dragged by a spring through a two-dimensional
annulus of granular material exhibit robust force fluctuations. At low packing fractions (ϕ< ϕ …

We investigate numerically how the motion of an intruder within a two-dimensional granular
system affects its structure and produces drag on the intruder. We made use of discrete …