Force fluctuations experienced by a boundary wall subjected to a granular flow in two distinct systems
1 Univ. Grenoble-Alpes, Irstea, ETGR, 38402 St-Martin d’Hères, France
2 Univ. Grenoble-Alpes, CNRS, 3SR, F-38000 Grenoble, France
Published online: 30 June 2017
The present paper describes a numerical study of force fluctuations experienced by a boundary wall subjected to a granular flow on two distinct systems, namely a lid-driven cavity and an immersed wall system. Though the two systems exhibit different time-averaged dynamics, the force fluctuations experienced by the boundary wall show robust features in terms of the shapes of the probability density distributions and auto-correlation functions, under a wide range of boundary confinement pressure and shearing velocity imparted to the granular flow at the top of the system. This study identifies the key link between the grain-wall force fluctuations and the μ(I)–rheology while moving from quasistatic to inertial regime.
© The Authors, published by EDP Sciences, 2017
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