The Brazil Nut effect under varying gravitation and excitation

These new experiments are performed in the laboratory using a linear motor, allowing covering a broader effective gravity range for the experiments, ranging from 0.5g to 2.0g and more when used in a centrifuge. These measurements also allow a detailed assessment of the influence of different excitation accelerations. We use the data of the derived rise velocities to compare with and to look into the validity of models (e.g. Knight et al, Grossman or Rajchenbach [2-4]).