Particle segregation in dense granular flows

JMNT Gray - Annual review of fluid mechanics, 2018 - annualreviews.org
Granular materials composed of particles with differing grain sizes, densities, shapes, or
surface properties may experience unexpected segregation during flow. This review focuses …

Modeling segregation in granular flows

PB Umbanhowar, RM Lueptow… - Annual review of …, 2019 - annualreviews.org
Accurate continuum models of flow and segregation of dense granular flows are now
possible. This is the result of extensive comparisons, over the last several years, of computer …

A perspective on the microscopic pressure (stress) tensor: History, current understanding, and future challenges

K Shi, ER Smith, EE Santiso… - The Journal of Chemical …, 2023 - pubs.aip.org
The pressure tensor (equivalent to the negative stress tensor) at both microscopic and
macroscopic levels is fundamental to many aspects of engineering and science, including …

[HTML][HTML] Fast, flexible particle simulations—an introduction to MercuryDPM

T Weinhart, L Orefice, M Post… - Computer physics …, 2020 - Elsevier
We introduce the open-source package MercuryDPM, which we have been develo** over
the last few years. MercuryDPM is a code for discrete particle simulations. It simulates the …

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 …

Microscopic description of the granular fluidity field in nonlocal flow modeling

Q Zhang, K Kamrin - Physical review letters, 2017 - APS
A recent granular rheology based on an implicit “granular fluidity” field has been shown to
quantitatively predict many nonlocal phenomena. However, the physical nature of the field …

Influence of coarse-graining parameters on the analysis of DEM simulations of silo flow

T Weinhart, C Labra, S Luding, JY Ooi - Powder technology, 2016 - Elsevier
The discrete element method (DEM) is used extensively for the simulation of granular
materials and in powder technology. Averaging or coarse graining (CG) techniques, also …

Discrete element modelling of large scale particle systems—I: exact scaling laws

YT Feng, DRJ Owen - Computational Particle Mechanics, 2014 - Springer
The discrete element method has emerged as a powerful predictive tool for the numerical
modelling of many scientific and engineering problems involving discrete and discontinuous …

Effects of particle breakage on the mechanical characteristics of geogrid-reinforced granular soils under triaxial shear: A DEM investigation

D Shi, J Niu, J Zhang, Z Chao, G Fowmes - Geomechanics for Energy and …, 2023 - Elsevier
A series of numerically triaxial shear tests on crushable and uncrushable granular soils
reinforced by geogrid were conducted using 3-Dimension Particle Flow Code. The …

Underlying asymmetry within particle size segregation

K van der Vaart, P Gajjar, G Epely-Chauvin, N Andreini… - Physical review …, 2015 - APS
We experimentally study particle scale dynamics during segregation of a bidisperse mixture
under oscillatory shear. Large and small particles show an underlying asymmetry that is …