- Letter
Unifying length-scale-based rheology of dense suspensions
Phys. Rev. Fluids 9, L012302 – Published 30 January, 2024
DOI: https://doi.org/10.1103/PhysRevFluids.9.L012302
Abstract
We present a length-scale-based rheology for dense sheared particle suspensions as they transition from inertial- to viscous-dominated. We derive a length-scale ratio using straightforward physics-based considerations for a particle subjected to pressure and drag forces. In doing so, we demonstrate that an appropriately chosen length-scale ratio intrinsically provides a consistent relationship between normal stress and system proximity to its “jammed” or solidlike state, even as a system transitions between inertial and viscous states, captured by a variable Stokes number.
