<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Rycroft, Chris H.</style></author><author><style face="normal" font="default" size="100%">Orpe, Ashish V.</style></author><author><style face="normal" font="default" size="100%">Kudrolli, Arshad</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Physical test of a particle simulation model in a sheared granular system</style></title><secondary-title><style face="normal" font="default" size="100%">Physical Review E</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">SEP</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">3</style></number><publisher><style face="normal" font="default" size="100%">AMER PHYSICAL SOC</style></publisher><pub-location><style face="normal" font="default" size="100%">ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA</style></pub-location><volume><style face="normal" font="default" size="100%">80</style></volume><pages><style face="normal" font="default" size="100%">031305</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;We report a detailed comparison of a slow gravity-driven sheared granular flow with a discrete-element simulation performed in the same geometry. In the experiments, grains flow inside a silo with a rectangular cross section and are sheared by a rough boundary on one side and smooth boundaries on the other sides. Individual grain position and motion are measured using a particle index-matching imaging technique where a fluorescent dye is added to the interstitial liquid which has the same refractive index as the glass beads. The simulations use a Cundall-Strack contact model between the grains using contact parameters that have been used in many other previous studies and ignore the hydrodynamic effects of the interstitial liquid. Computations are performed to understand the effect of particle coefficient of friction, elasticity, contact model, and polydispersity on mean flow properties. We then perform a detailed comparison of the particle fluctuation properties as measured by the displacement probability distribution function and the mean square displacement. All in all, our study suggests a high level of quantitative agreement between the simulations and experiments.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">3</style></issue><custom3><style face="normal" font="default" size="100%">Foreign</style></custom3><custom4><style face="normal" font="default" size="100%">2.352</style></custom4></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Orpe, Ashish V.</style></author><author><style face="normal" font="default" size="100%">Rycroft, Chris H.</style></author><author><style face="normal" font="default" size="100%">Kudrolli, Arshad A.</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Goddard, J. D.</style></author><author><style face="normal" font="default" size="100%">Jenkins, J. T.</style></author><author><style face="normal" font="default" size="100%">Giovine, P.</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Shear induced diffusion in dense granular flows</style></title><secondary-title><style face="normal" font="default" size="100%">IUTAM-ISIMM Symposium on Mathematical Modeling and Physical Instances of Granular Flows</style></secondary-title><tertiary-title><style face="normal" font="default" size="100%">AIP Conference Proceedings</style></tertiary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">DEM</style></keyword><keyword><style  face="normal" font="default" size="100%">Diffusion</style></keyword><keyword><style  face="normal" font="default" size="100%">granular</style></keyword><keyword><style  face="normal" font="default" size="100%">index matching</style></keyword><keyword><style  face="normal" font="default" size="100%">LAMMPS</style></keyword><keyword><style  face="normal" font="default" size="100%">laser fluorescence</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">JUN</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">IUTAM; ISIMM; Italian Inst Higher Math; US Natl Sci Fdn; Reg Council Reggio Calabria; Prov Reggio Calabria; Mediterranean Univ Reggio Calabria</style></publisher><pub-location><style face="normal" font="default" size="100%">2 Huntington Quadrangle, STE 1NO1, Melville, NY 11747-4501 USA</style></pub-location><volume><style face="normal" font="default" size="100%">1227</style></volume><pages><style face="normal" font="default" size="100%">221-229</style></pages><isbn><style face="normal" font="default" size="100%">978-0-7354-0772-5</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;The dynamics of dense granular flows subjected to gravity induced shear are investigated experimentally using the refractive index matching technique. The system consists of grains flowing inside a bin with a rectangular cross-section and sheared by a rough boundary on one side and smooth boundaries on the remaining sides. The particles flow within a viscous interstitial liquid having the same refractive index as particles and are imaged in the bulk using laser fluorescence. The particle positions are identified very accurately and tracked over long durations to obtain the mean and fluctuating properties. The shear is observed to be non-linear and localized in a region of 3 to 4 particles near the boundary. The boundary imposes a packing order, and the grains are observed to flow in layers, parallel to the shearing boundary, which get progressively more disordered with distance from the walls. We have also carried out soft particle simulations in a equivalent system incorporating the Cundall-Strack contact model between the particles and ignoring the hydrodynamic effects of the interstitial liquid to understand the effect of particle friction coefficient, elasticity, contact model and polydispersity on the mean and fluctuating flow properties. We find the mean velocity and the number density of the particles as a function of flow cross-section and the particle fluctuation properties observed in the experiments and the simulations to in very good agreement after appropriate scaling.&lt;/p&gt;</style></abstract><notes><style face="normal" font="default" size="100%">IUTAM-ISIMM Symposium on Mathematical Modeling and Physical Instances of Granular Flows, Reggio Calabria, ITALY, SEP 14-18, 2009</style></notes></record></records></xml>