Dynamical compressibility of dense granular shear flows

Abstract

It has been conjectured by Bagnold [1] that an assembly of hard non-deformable spheres could behave as a compressible medium when slowly sheared, as the average density of such a system effectively depends on the confining pressure. Here we use discrete element simulations to show the existence of transverse and sagittal waves associated to this dynamical compressibility. For this purpose, we study the resonance of these waves in a linear Couette cell and compare the results with those predicted from a continuum local constitutive relation.

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Cited by in corpus (5)

• Non-local rheology in dense granular flows -- Revisiting the concept of fluidity
• Well-posed continuum equations for granular flow with compressibility and $\mu (I)$-rheology
• Phase Diagram for Inertial Granular Flows
• Compressibility regularizes the "$\mu (I)$" rheology for granular flows
• Rheology of dense granular flows for elongated particles