We studied four different scenarios as follows: (I) Large particles are fixated adjacent to the wall and small particles are distributed in residual volume. (II) Large particles are fixated in the middle of the box and small particles are distributed in residual volume. (III) Small particles are fixated adjacent to the wall and large particles are distributed in residual volume. (IV) Small particles are fixated in the middle of the box and large particles are distributed in residual volume.