Viscous-inertial transition in dense granular suspension
arXiv:2202.10641 · doi:10.1103/PhysRevLett.129.078001
Abstract
Granular suspensions present a transition from a Newtonian rheology in the Stokes limit to a Bagnoldian rheology when inertia is increased. A custom rheometer which can be run in a pressure or a volume-imposed mode is used to examine this transition in the dense regime close to jamming. By varying systematically the interstitial fluid, shear rate, and packing fraction in volume-imposed measurements, we show that the transition takes place at a Stokes number of 10 independent of the packing fraction. Using pressure-imposed rheometry, we investigate whether the inertial and viscous regimes can be unified as a function of a single dimensionless number based on stress additivity.
arXiv comment5 pages, 4 figures
References in corpus (5)
- Transition from viscous to inertial regime in dense suspensions
- Shear thickening and migration in granular suspensions
- Unified Theory of Inertial Granular Flows and Non-Brownian Suspensions
- Flow regime transitions in dense non-Brownian suspensions: rheology, microstructural characterisation and constitutive modelling
- The influence of surface roughness on the rheology of immersed and dry frictional spheres