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Origin of subcritical shear-banding instability in a dense two-dimensional sheared granular fluid
Published in
Volume: 14
Issue: 2
Pages: 221 - 227
The granular plane Couette flow is known to be linearly unstable to shear-banding instability beyond a critical density, and our nonlinear analysis suggests that the nature of bifurcation (supercritical/subcritical) in dense flows depends strongly on the choice of the constitutive model. While the standard Enskog model for nearly elastic hard-disks predicts supercritical bifurcations formoderate to dense systems, amore realistic model with global equation of states for hard-disks (that are likely to hold for the whole range of densities) predicts a subcritical bifurcation in the dense limit. The latter prediction agrees with recent particle simulations of a sheared inelastic hard-disk system. © Springer-Verlag 2012.
About the journal
JournalGranular Matter
Open AccessNo