Granular rheology: a tale of three time scales
Soft Condensed Matter
2025-09-16 v3 Statistical Mechanics
Abstract
We adapt statistical models of the physics of complex fluids to study the rheology of granular liquids. This allows us to provide laws of granular rheology based on first principles, which compare well with previously established phenomenological laws. In particular, the very successful law of mu(I) rheology can be understood within our model as the lowest order non trivial Pade approximant of the macroscopic laws of rheology. Our model's ability to describe granular physics outside of the Bagnold scaling regime allows for a natural extension to the rheology of granular suspensions.
Keywords
Cite
@article{arxiv.2008.05931,
title = {Granular rheology: a tale of three time scales},
author = {Olivier Coquand and Wolf Till Kranz and Matthias Sperl},
journal= {arXiv preprint arXiv:2008.05931},
year = {2025}
}
Comments
13 pages, 5 figures New version with corrections required in the review process