Scaling behavior of immersed granular flows

Lhassan Amarsid (1, 2, 3, 4) , Jean-Yves Delenne (5) , Patrick Mutabaruka (6) , Yann Monerie (2, 3, 7) , Frédéric Perales (1, 3) , Farhang Radjai (2, 3, 6, 4)

1 IRSN - Institut de Radioprotection et de Sûreté Nucléaire
2 LMGC - Laboratoire de Mécanique et Génie Civil
3 MIST - Laboratoire de micromécanique et intégrité des structures
4 PMMD - Physique et Mécanique des Milieux Divisés
5 UMR IATE - Ingénierie des Agro-polymères et Technologies Émergentes
6 MSE 2 - Multiscale Material Science for Energy and Environment
7 ThM2 - ThermoMécanique des Matériaux

The shear behavior of granular materials immersed in a viscous fluid depends on fluid properties (viscosity, density), particle properties (size, density) and boundary conditions (shear rate, confining pressure). Using computational fluid dynamics simulations coupled with molecular dynamics for granular flow, and exploring a broad range of the values of parameters, we show that the parameter space can be reduced to a single parameter that controls the packing fraction and effective friction coefficient. This control parameter is a modified inertial number that incorporates viscous effects.

Mots clés: viscous fluid; friction factor

Mots clés: coefficient de frottement; méthode de simulation; fluide visqueux; produit granulaire

Domaines: Sciences du Vivant [q-bio]

Lhassan Amarsid, Jean-Yves Delenne, Patrick Mutabaruka, Yann Monerie, Frédéric Perales, et al.. Scaling behavior of immersed granular flows. International Conference on Micromechanics of Granular Media (Powders & Grains), Jul 2017, Montpellier, France. ⟨10.1051/epjconf/201714009044⟩. ⟨hal-01594573⟩