Baumann, Gerald; Wolf, Dietrich:

Self-organized criticality in a two-dimensional rotating drum model

In: Physical Review / E, Statistical, nonlinear and soft matter physics, Jg. 54 (1996) ; Nr. 5, S. R4504-R4507
ISSN: 1550-2376, 1538-4519
Zeitschriftenaufsatz / Fach: Physik
For a model of a slowly rotating two-dimensional drum the statistics of the potential energy dissipation in avalanches is studied. Self-organized criticality occurs only for the small disks in bidisperse fillings. The large disks in bidisperse fillings as well as monodisperse fillings show a stretched exponential distribution. This is due to the absence of niches on the surface which are able to trap these disks.