Testing the μ(I) granular rheology against experimental silo data Luke Fullard, Eric Breard, Clive Davies, Pierre-Yves Lagrée, Stéphane Popinet and Gert Lube EPJ Web Conf., 140 (2017) 11002 Published online: 30 June 2017 DOI: 10.1051/epjconf/201714011002