The video shows a large-scale horizontal shaker filled with 864000 sharp-edged particles ranging in size between 0.25mm to 2mm. The shaking frequency is set to 4 Hz and the amplitude to 3cm. The size of the particles is color-coded. To properly resolve the dynamics visual scene descriptions were written to disk with a rate of 1000 frames per second. The final video is slowed down by a factor of 10. The simulation ran for 27 hours on 64 nodes of the Emmy clusters located at the regional computing centre in Erlangen (RRZE). The setup was simulated for 2.8s simulation time with time steps of length 10us. In each time step 10 iterations of a parallel non-smooth contact dynamics (NSCD) method were performed. An emerging size segregation can be observed: The smallest particles with beige color collect at the bottom right below the larger bluish particles
