Compartmentalized granular gases: Flux model results

Devaraj van der Meer*, Ko van der Weele, Peter Reimann, Detlef Lohse

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

24 Citations (Scopus)
2 Downloads (Pure)


A review is given of our previous work on the clustering phenomenon for vibrofluidized granular matter in an array of connected compartments, being a prime example of spontaneous pattern formation in a many-body system far from thermodynamic equilibrium. Experiments show that when the shaking strength is reduced below a certain critical level, the grains cluster together: first into a subset of the compartments and ultimately, on a much longer timescale, into a single compartment. These experimental observations are explained qualitatively and quantitatively by a dynamical flux model. We discuss several variations on the original system, altering the openings between the compartments, in such a way that the clustering induces convective patterns and directed transport. Here the bifurcational structure becomes more intricate, but is again fully explained by the corresponding flux model.

Original languageEnglish
Article numberP07021
JournalJournal of statistical mechanics : theory and experiment
Issue numberJuly
Publication statusPublished - 1 Jul 2007


  • Coarsening processes (theory)
  • Granular matter


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