This paper describes computer simulation studies of granular materials under dense
conditions where particles are in persistent contact with their neighbours and the elasticity of …

While many rheological studies are performed at a fixed concentration, most granular flows
are constrained, not by concentration, but by an applied stress. The stress constraint sets the …

Recent experiments and numerical simulations of dry granular flows suggest that a simple
rheological description in terms of a friction coefficient varying both with shear rate and …

We analyze the main features of granular shear flow through experimental measurements in
a Couette geometry and a comparison to a locally Newtonian, continuum model of granular …

The steady-state shear rheology of granular materials is investigated in slow quasistatic and
inertial flows. The effect of gravity (thus the local pressure) and the often-neglected contact …

The continuum theory of partially fluidized shear granular flows is tested and calibrated
using two-dimensional soft particle molecular dynamics simulations. The theory is based on …

Molecular-dynamics simulations of noncohesive granular assemblies under shear are
described. At low shear rate γ̇, the assembly is unstable to uniform motion and exhibits …

We study the plane shear flow of a dense assembly of dissipative disks using discrete
simulation and prescribing the pressure and the shear rate. Those shear states are steady …

Recent progresses in understanding the behavior of dense granular flows are presented.
After presenting a bulk rheology of granular materials, I focus on the new developments to …

The rheology of dense granular flows is studied numerically in a shear cell controlled at
constant pressure and shear stress, confined between two granular shear flows. We show …