Shear-Driven Flow of Athermal, Frictionless, Spherocylinder Suspensions in Two Dimensions: Spatial Structure and Correlations
arXiv:2002.02348 · doi:10.1103/PhysRevE.101.032907
Abstract
We use numerical simulations to study the flow of athermal, frictionless, soft-core two dimensional spherocylinders driven by a uniform steady-state simple shear applied at a fixed volume and a fixed finite strain rate . Energy dissipation is via a viscous drag with respect to a uniformly sheared host fluid, giving a simple model for flow in a non-Brownian suspension with Newtonian rheology. We study the resulting spatial structure of the sheared system, and compute correlation functions of the velocity, the particle density, the nematic order parameter, and the particle angular velocity. Correlations of density, nematic order, and angular velocity are shown to be short ranged both below and above jamming. We compare a system of size-bidisperse particles with a system of size-monodisperse particles, and argue how differences in spatial order as the packing increases leads to differences in the global nematic order parameter. We consider the effect of shearing on initially well ordered configurations, and show that in many cases the shearing acts to destroy the order, leading to the same steady-state ensemble as found when starting from random initial configurations.
arXiv comment20 pages, 25 figures. Updated to reflect published version. arXiv admin note: substantial text overlap with arXiv:1909.08669
References in corpus (13)
- Jamming at Zero Temperature and Zero Applied Stress: the Epitome of Disorder
- Critical Scaling of Shear Viscosity at the Jamming Transition
- Tetratic Order in the Phase Behavior of a Hard-Rectangle System
- Granular materials composed of shape-anisotropic grains
- Critical Scaling of Shearing Rheology at the Jamming Transition of Soft Core Frictionless Disks
- Disentangling the role of structure and friction in shear jamming
- Glassiness, Rigidity and Jamming of Frictionless Soft Core Disks
- Critical Scaling of Bagnold Rheology at the Jamming Transition of Frictionless Two Dimensional Disks
- Orientational Ordering in Athermally Sheared, Aspherical, Frictionless Particles
- Shear-Driven Flow of Athermal, Frictionless, Spherocylinder Suspensions in Two Dimensions: Stress, Jamming, and Contacts
- Shear-Driven Flow of Athermal, Frictionless, Spherocylinder Suspensions in Two Dimensions: Particle Rotations and Orientational Ordering
- Orientational order and alignment of elongated particles induced by shear
- Shear induced alignment and dynamics of elongated granular particles