Dense granular flows: interpolating between grain inertia and fluid viscosity based constitutive laws

Pierre Rognon (1, 2) , Cyprien Gay (1)

1 MSC - Matière et Systèmes Complexes
2 CRPP - Centre de recherches Paul Pascal

A scalar constitutive law was recently obtained for dense granular flows from a two-grain argument, both in the inertial regime (grain inertia) and in the viscous regime. As the resulting law is not exactly the same in both regimes, we here provide an expression for the crossover between both regimes.

Domaines: Matière Molle [cond-mat.soft]; Mécanique des matériaux [physics.class-ph]

Pierre Rognon, Cyprien Gay. Dense granular flows: interpolating between grain inertia and fluid viscosity based constitutive laws. 2008. ⟨hal-00321845⟩