We present molecular dynamics simulations of granular material submitted to vibrations in a
two-dimensional system. We find various types of convection cells, due either to the …

We investigate granular materials undergoing vibrations, using a molecular dynamics (MD)
algorithm, and we display limitations of the numerical method. We show that previously …

In this work we use computer simulations to examine the effects of boundary conditions on
convection in vibrated granular systems. A two-dimensional model reproduces experimental …

Convection and fluidization in a vibrated bed of powder are reproduced in a numerical
simulation. In the simulation, each particle of the powder, during a collision, has a …

We present simulations of spheres with a rough surface in two-dimensional (2D) vibrating
boxes. We introduce a collision model based on recent experiments with colliding sprees …

The size segregation of granular materials in a vibrating two-dimensional container is
investigated using molecular dynamics. We find that the rising of larger particles is …

Thermal convection is observed in molecular dynamic simulations of a fluidized granular
system of nearly elastic hard disks moving under gravity, inside a square box. Boundaries …

Granular materials, like sand, powder or grains present intriguing phenomena. Vibration and
shearing can lead to convective motion and segregation. A variation of stress may cause …

We investigate collective dissipative properties of vibrated granular materials by means of
molecular-dynamics simulations. Rates of energy losses indicate three different regimes or …

We report an experimental study of the convective motion generated in a horizontal layer of
solid particles under vertical vibrations. This convective flow occurs beyond a critical …