Pattern selection by a granular wave in a rotating drum.
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.
Zuriguel
I
I
Manchester Centre for Nonlinear Dynamics, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom. iker@reynolds.ph.man.ac.uk
Gray
J M N T
JM
Peixinho
J
J
Mullin
T
T