DEM modeling of segregation and stratification in pouring heaps of bidispersed mixtures of rounded particles
This study aims to assess and analyse the patterns of segregation and stratification in pouring heaps of granular mixtures composed by binary sized and uniformly shaped particles. We present 2D and 3D simulations which respectively build deposits of poured disks and spheres by means of a discrete-el...
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EDP Sciences
2021-01-01
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Series: | EPJ Web of Conferences |
Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2021/03/epjconf_pg2021_03049.pdf |
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doaj-c490c30222ca494ca4936a85f96022832021-08-02T22:22:50ZengEDP SciencesEPJ Web of Conferences2100-014X2021-01-012490304910.1051/epjconf/202124903049epjconf_pg2021_03049DEM modeling of segregation and stratification in pouring heaps of bidispersed mixtures of rounded particlesVuilloz TristanCantor DavidOvalle CarlosThis study aims to assess and analyse the patterns of segregation and stratification in pouring heaps of granular mixtures composed by binary sized and uniformly shaped particles. We present 2D and 3D simulations which respectively build deposits of poured disks and spheres by means of a discrete-element approach known as contact dynamics (CD). In order to identify preferable conditions for segregation and stratification, we try several deposition scenarios varying the pouring flow rate, injection height, heap’s width and mass ratio between large and small grains in our binary samples. Although some authors assert that shape dispersity might not be necessary to obtain stratification, the phenomenon seems hard to seize with mono-shaped granular media as it appears to require a close control on pouring conditions. The introduction of our DEM models and statistical analysis intend to provide examples of what could constitute efficient numerical tools to study the remaining open problems related to heap segregation patterns prediction.https://www.epj-conferences.org/articles/epjconf/pdf/2021/03/epjconf_pg2021_03049.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Vuilloz Tristan Cantor David Ovalle Carlos |
spellingShingle |
Vuilloz Tristan Cantor David Ovalle Carlos DEM modeling of segregation and stratification in pouring heaps of bidispersed mixtures of rounded particles EPJ Web of Conferences |
author_facet |
Vuilloz Tristan Cantor David Ovalle Carlos |
author_sort |
Vuilloz Tristan |
title |
DEM modeling of segregation and stratification in pouring heaps of bidispersed mixtures of rounded particles |
title_short |
DEM modeling of segregation and stratification in pouring heaps of bidispersed mixtures of rounded particles |
title_full |
DEM modeling of segregation and stratification in pouring heaps of bidispersed mixtures of rounded particles |
title_fullStr |
DEM modeling of segregation and stratification in pouring heaps of bidispersed mixtures of rounded particles |
title_full_unstemmed |
DEM modeling of segregation and stratification in pouring heaps of bidispersed mixtures of rounded particles |
title_sort |
dem modeling of segregation and stratification in pouring heaps of bidispersed mixtures of rounded particles |
publisher |
EDP Sciences |
series |
EPJ Web of Conferences |
issn |
2100-014X |
publishDate |
2021-01-01 |
description |
This study aims to assess and analyse the patterns of segregation and stratification in pouring heaps of granular mixtures composed by binary sized and uniformly shaped particles. We present 2D and 3D simulations which respectively build deposits of poured disks and spheres by means of a discrete-element approach known as contact dynamics (CD). In order to identify preferable conditions for segregation and stratification, we try several deposition scenarios varying the pouring flow rate, injection height, heap’s width and mass ratio between large and small grains in our binary samples. Although some authors assert that shape dispersity might not be necessary to obtain stratification, the phenomenon seems hard to seize with mono-shaped granular media as it appears to require a close control on pouring conditions. The introduction of our DEM models and statistical analysis intend to provide examples of what could constitute efficient numerical tools to study the remaining open problems related to heap segregation patterns prediction. |
url |
https://www.epj-conferences.org/articles/epjconf/pdf/2021/03/epjconf_pg2021_03049.pdf |
work_keys_str_mv |
AT vuilloztristan demmodelingofsegregationandstratificationinpouringheapsofbidispersedmixturesofroundedparticles AT cantordavid demmodelingofsegregationandstratificationinpouringheapsofbidispersedmixturesofroundedparticles AT ovallecarlos demmodelingofsegregationandstratificationinpouringheapsofbidispersedmixturesofroundedparticles |
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