Nonequilibrium Thermodynamics of the Soft Glassy Rheology Model
Soft Condensed Matter
2015-06-19 v1
Abstract
The Soft Glassy Rheology (SGR) model is a mesoscopic framework which proved to be very successful in describing flow and deformation of various amorphous materials phenomenologically (e.g. pastes, slurries, foams etc). In this paper, we cast SGR in a general, model independent framework for nonequilibrium thermodynamics called General Equation for the Nonequilibrium Reversible-Irreversible Coupling (GENERIC). This leads to a new formulation of SGR which clarifies how it can properly be coupled to hydrodynamic fields, resulting in a thermodynamically consistent, local, continuum version of SGR. Additionally, we find that compliance with thermodynamics imposes the existence of a modification to the stress tensor as predicted by SGR.
Keywords
Cite
@article{arxiv.1404.3481,
title = {Nonequilibrium Thermodynamics of the Soft Glassy Rheology Model},
author = {Ingo Fuereder and Patrick Ilg},
journal= {arXiv preprint arXiv:1404.3481},
year = {2015}
}