The CAD-model contains the geometry of the mixing mill (solid part) and the volume where the particles are inserted by the filling algorithm. A mesh is not needed for this analysis type. The outer shape of the mill geometry is extracted automatically and used as boundary for the particles. The filling is done at the beginning of the computation. In this case the half of a cylinder geometry is used.
At the beginning of the simulation the particles fall to the ground because of the gravitational load. The mill does not move at that time (t<0.5s). After the particles come to a rest the acceleration process is started. The mill is accelerated constantly so that the angular velocity (rad) is proportional to the time. The angular velocity can be adjusted either via a formula or a table value.
For lots of industrial applications it is important that the particles inside the mill slide from the top to the bottom part during the rotational movement of the mill and do not fly and hit the mill wall on the bottom in order to prevent the particles from damage or fracture. The particle simulation can help the engineers to design the mill profile as well as accelerate and drive the mill efficiently.