title: Pattern selection by a granular wave in a rotating drum.
abstract: The results of an experimental investigation of granular segregation in a thin rotating drum are presented. A mechanism based on the presence of an uphill wave of particles has been found to govern the observed pattern of petals. Specifically we develop a simple model that captures the essential physics of the segregation and yields an algebraic expression that predicts the number of petals in the pattern.
authors.affiliation: Manchester Centre for Nonlinear Dynamics, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom. iker@reynolds.ph.man.ac.uk
authors.forename: I
authors.initials: I
authors.lastname: Zuriguel
authors.forename: J M N T
authors.initials: JM
authors.lastname: Gray
authors.forename: J
authors.initials: J
authors.lastname: Peixinho
authors.forename: T
authors.initials: T
authors.lastname: Mullin