Power-law scaling in granular rheology across flow geometries

S Kim, K Kamrin - Physical Review Letters, 2020 - APS
Based on discrete element method simulations, we propose a new form of the constitutive
equation for granular flows independent of packing fraction. Rescaling the stress ratio μ by a …

A second-order non-local model for granular flows

S Kim, K Kamrin - Frontiers in Physics, 2023 - frontiersin.org
We determine a constitutive equation for developed three-dimensional granular flows based
on a series of discrete element method simulations. In order to capture non-local …

Controls over sediment flux along soil‐mantled hillslopes: Insights from granular dynamics simulations

E BenDror, L Goren - Journal of Geophysical Research: Earth …, 2018 - Wiley Online Library
Sediment flux from soil‐mantled hillslopes controls the volume of sediments delivered to
rivers, the rate of rock exhumation, and the topographic evolution of hillslopes. Recent …

Granular flows of binary mixtures down an inclined channel

N Wang, H Lu, J Xu, X Guo, H Liu - International Journal of Multiphase Flow, 2019 - Elsevier
Granular flows of binary mixtures have been investigated in an inclined channel. The
velocity profiles of the granular flows are obtained by employing a high-speed camera. The …

Granular surface flows confined between flat, frictional walls. Part 1. Kinematics

P Richard, A Valance, R Delannay… - Journal of Fluid …, 2022 - cambridge.org
We report and analyse the results of extensive discrete element method simulations of three-
dimensional gravity driven flows of cohesionless granular media over an erodible bed, the …

High speed confined granular flows down inclined: numerical simulations

VJL Ralaiarisoa, A Valance, N Brodu… - EPJ Web of …, 2017 - epj-conferences.org
New regimes in high-speed confined granular flows down inclined have recently been
obtained in numerical simulations [1]. Increasing the angle of inclination reveals the …

Granular surface flow on an asymmetric conical heap

S Mandal, DV Khakhar - Journal of Fluid Mechanics, 2019 - cambridge.org
We carry out an experimental study of the granular surface flow of nearly monodisperse
glass beads on a conical heap formed on a rough circular disc by a narrow stream of the …

Characterization of the flowability dynamics of granular material flowing down a narrow channel

N Wang, H Lu, J Xu, X Guo, H Liu - Particuology, 2020 - Elsevier
The flowability of granular material is commonly determined from shear cell tests, but in the
real world, the granular flow is quite different in many cases. For this paper, the flowabilities …

Determining Nonlocal Granular Rheology from Discrete Element Simulations

S Kim - 2021 - search.proquest.com
We determine the constitutive equation of simple granular materials considering them as
continuous fluids. Based on discrete element simulations, we propose two rheological …

Influence of an inserted bar on the flow regimes in the hopper

Y Peng, S Zhang, M Wang, G Yang, J Wan… - Chinese …, 2021 - iopscience.iop.org
We investigated the influence of an inserted bar on the hopper flow experimentally. Three
geometrical parameters, size of upper outlet D 1, size of lower outlet D 0, and the height of …