Transitions between multiple attractors in a granular experiment

We report on a granular experiment that produces multiple quasiperiodic pattern solutions in a rotating flat container filled with a bidisperse mixture of grains. The observed dynamics show a pronounced spatiotemporally periodic drift of segregated patterns. In the course of long experiment duration...

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Bibliographic Details
Published in:Physical review. E, Statistical, nonlinear, and soft matter physics Statistical, nonlinear, and soft matter physics, 2012-04, Vol.85 (4 Pt 1), p.040302-040302, Article 040302
Main Authors: Rietz, Frank, Stannarius, Ralf
Format: Article
Language:English
Subjects:
Colloids - chemistry
Computer Simulation
Models, Chemical
Models, Molecular
Phase Transition
Powders - chemistry
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Summary:We report on a granular experiment that produces multiple quasiperiodic pattern solutions in a rotating flat container filled with a bidisperse mixture of grains. The observed dynamics show a pronounced spatiotemporally periodic drift of segregated patterns. In the course of long experiment durations, the system switches between different states that appear to be stable oscillatory solutions over many periods. In the long-term limit, the system does not tend toward a stationary state. The results complement and extend previous observations in cylindrical geometries, and represent a challenge for modeling and theoretical description.
ISSN:1539-3755
1550-2376
DOI:10.1103/physreve.85.040302