(375h) An Experimental Study of Cylindrical Particle’s Effective Size in a Rotating Tumbler

There is a dearth of studies that focus on shape segregation. This is due, in part, to the complex nature of the flow of differently shaped particles within a dense flow. In this paper, we explain the segregation of cylindrical tracer particles inside a rotating tumbler that is half filled with a background media comprised of spherical particles. We evaluate all existing methods proposed in the literature to calculate the cylindrical particles’ effective size and compare these methodologies to results under a wide range of particle conditions. We find that a newly proposed method not only more accurately predicts the cylindrical particles’ effective size, but also shows consistent results for both disk and cylindrical particles. This work represents a positive first step toward merging shape segregation into the more mature and well-studied size segregation ecosystem.