This work generalises the granular integration through transients formalism introduced by Kranz et al. [Phys. Rev. Lett. 121, 148002 (2018)] to the determination of the pressure. We focus on the Bagnold regime, and provide theoretical support to the empirical μ(I) rheology laws, that have been successfully applied in many granular flow problems. In particular, we confirm that the interparticle friction is irrelevant in the regime where the μ(I) laws apply.
@article{arxiv.2006.04151,
title = {Integration through transients approach to the $\mu(\mathcal{I})$ rheology},
author = {Olivier Coquand and Matthias Sperl and Till Kranz},
journal= {arXiv preprint arXiv:2006.04151},
year = {2020}
}