A numerical comparison of mixing efficiencies of solids in a cylindrical vessel subject to a range of motions

► A cylindrical vessel moving with three different motions was modelled. ► The effect of speed and fill patterns on mixing efficiency were compared. ► For the rotating drum operating in rolling mode the radial mixing was dominant. ► For the hoop mixer, rocking motion caused an increase in mixing in the axial direction. ► For the Turbula mixer, mixing efficiency did not change linearly with the speed.