Discrete particle simulation of radial segregation in horizontally rotating drum: Effects of drum-length and non-rotating end-plates

► DEM simulations of radial segregation in horizontal granular. ► Effect of roughened end-plates and drum length on radial segregation. ► In longer drums the segregation ratio is higher than for the shorter drum. ► Lower friction on non-rotating side-plates shows higher segregation. ► These phenomena are due to the diffusive collisions of particles in the active layer.