Computing collision stress in assemblies of active spherocylinders: applications of a fast and generic geometric method
Fluid Dynamics
2019-02-18 v1 Soft Condensed Matter
Abstract
In this work, we provide a solution to the problem of computing collision stress in particle-tracking simulations. First, a formulation for the collision stress between particles is derived as an extension of the virial stress formula to general-shaped particles with uniform or non-uniform density. Second, we describe a collision-resolution algorithm based on geometric constraint minimization which eliminates the stiff pairwise potentials in traditional methods. The method is validated with a comparison to the equation of state of Brownian spherocylinders. Then we demonstrate the application of this method in several emerging problems of soft active matter.
Keywords
Cite
@article{arxiv.1811.04736,
title = {Computing collision stress in assemblies of active spherocylinders: applications of a fast and generic geometric method},
author = {Wen Yan and Huan Zhang and Michael J. Shelley},
journal= {arXiv preprint arXiv:1811.04736},
year = {2019}
}