Abstract
This paper presents segregation phenomena of spherical grains observed in a rolling cylinder and its analysis by using the DEM. The rolling cylinder experimental device in which grains flow down relatively along the rolling bottom plane and grains stay constantly in a position of rolling cylinder is proposed. Therefore grains movement in those groups can be observed. In experiment 3 size glass beads, one size nylon bead, and 3size harden coal ash beads are used, and two of them are combined as a sample. Segregation occurrence combination is categorized. Moving characteristics of large size grain and small size grain is discussed by analysis results of DEM as well as experimental observations.
