Effect of Friction on Dense Suspension Flows of Hard Particles

Abstract

We use numerical simulations to study the effect of particle friction on suspension flows of non-Brownian hard particles. By systematically varying the microscopic friction coefficient ${\mu }_p$ and the viscous number $J$, we build a phase diagram that identifies three regimes of flow: Frictionless, Frictional Sliding, and Rolling. Using energy balance in flow, we predict relations between kinetic observables, confirmed by numerical simulations. For realistic friction coefficient and small viscous numbers (below $J\sim 10^{-3}$) we show that the dominating dissipative mechanism is sliding of frictional contacts, and we characterize asymptotic behaviors as jamming is approached. Outside this regime, our observations support that flow belongs to the universality class of frictionless particles. We discuss recent experiments in the context of our phase diagram.

8 pages

References in corpus (11)

• Scaling description of the yielding transition in soft amorphous solids at zero temperature
• Homogenization approach to the behavior of suspensions of noncolloidal particles in yield stress fluids
• Frictionless bead packs have macroscopic friction, but no dilatancy
• Identification of rolling resistance as a shape parameter in sheared granular media
• Shear thickening and migration in granular suspensions
• Unified Theory of Inertial Granular Flows and Non-Brownian Suspensions
• Critical Scaling of Shearing Rheology at the Jamming Transition of Soft Core Frictionless Disks
• Diverging viscosity and soft granular rheology in non-Brownian suspensions
• Effect of particle collisions in dense suspension flows
• Friction-induced Shear thickening: a microscopic perspective
• The non-local repercussions of partial jamming in dense granular flows

Cited by in corpus (18)

• The physics of dense suspensions
• A constraint-based approach to granular dispersion rheology
• Friction law and hysteresis in granular materials
• The influence of surface roughness on the rheology of immersed and dry frictional spheres
• Constitutive relations for shear fronts in shear-thickening suspensions
• Local Rheology Relation with Variable Yield Stress Ratio across Dry, Wet, Dense, and Dilute Granular Flows
• Flow and rheology of frictional elongated grains
• Interparticle friction leads to non-monotonic flow curves and hysteresis in viscous suspensions
• Discontinuous shear thickening of dense suspensions under confining pressure
• Shear Thickening of Dense Suspensions: The Role of Friction
• Contact tribology also affects the slow flow behavior of granular emulsions
• Extended $\mu (J)$-rheology for dense suspensions at oscillatory shear flows
• Sediment creep triggered by porous flow
• Unifying Suspension and Granular flows near Jamming
• Orientational arrest in dense suspensions of elliptical particles under oscillatory shear flows
• Effects of salinity on flows of dense colloidal suspensions
• Shear flow of frictional spheroids: Comparison between elongated and flattened particles
• Oscillatory shear flows of dense suspensions at imposed pressure: Rheology and micro-structure