Impact of Softness of Particles on Rheology of Dilute Granular Gases

Abstract

We numerically and theoretically investigate how the softness of particles affects the rheology of sheared dilute granular gases. We find that the kinetic theory predicts the deviation of the flow curve from the Bagnold scaling, and it works well below a certain shear rate when we compare with the simulation results. It is also found that there is no theoretical solution above this shear rate, which is because the energy loss due to inelastic collisions cannot be balanced with the energy injection by the shear.

5 pages, 4 figures, 1 table

References in corpus (4)

• Inherent Rheology of a Granular Fluid in Uniform Shear Flow
• Revisiting ignited-quenched transition and the non-Newtonian rheology of a sheared dilute gas-solid suspension
• Enskog kinetic theory of rheology for a moderately dense inertial suspension
• Two-Step Discontinuous Shear Thickening of Dilute Inertial Suspensions Having Soft-Core Potential