TY - JOUR
T1 - Compartmentalized granular gases
T2 - Flux model results
AU - van der Meer, Devaraj
AU - van der Weele, Ko
AU - Reimann, Peter
AU - Lohse, Detlef
PY - 2007/7/1
Y1 - 2007/7/1
N2 - 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.
AB - 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.
KW - Coarsening processes (theory)
KW - Granular matter
UR - http://www.scopus.com/inward/record.url?scp=34547657744&partnerID=8YFLogxK
U2 - 10.1088/1742-5468/2007/07/P07021
DO - 10.1088/1742-5468/2007/07/P07021
M3 - Article
AN - SCOPUS:34547657744
SN - 1742-5468
VL - 2007
JO - Journal of statistical mechanics : theory and experiment
JF - Journal of statistical mechanics : theory and experiment
IS - July
M1 - P07021
ER -