Flow rate of polygonal grains through a bottleneck Interplay between shape and size

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We report two-dimensional simulations of circular and polygonal grains passing through an aperture at the bottom of a silo. The mass flow rate for regular polygons is lower than for disks\red{,} as observed by other authors. We show that both the exit velocity of the grains and the packing fraction...

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Autores principales: Goldberg, Ezequiel, Carlevaro, Manuel, Pugnaloni, Luis
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: Papers in Physics 2018
Materias:
Granular flow; Non-circular particles
Acceso en línea:http://hdl.handle.net/20.500.12272/2795
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-2795
record_format dspace
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
topic Granular flow; Non-circular particles
spellingShingle Granular flow; Non-circular particles
Goldberg, Ezequiel
Carlevaro, Manuel
Pugnaloni, Luis
Flow rate of polygonal grains through a bottleneck Interplay between shape and size
topic_facet Granular flow; Non-circular particles
description We report two-dimensional simulations of circular and polygonal grains passing through an aperture at the bottom of a silo. The mass flow rate for regular polygons is lower than for disks\red{,} as observed by other authors. We show that both the exit velocity of the grains and the packing fraction are lower for polygons, which leads to the reduced flow rate. We point out the importance of the criteria used to define when two objects of different shape are considered to be of the same size. Depending on this criteria, the mass flow rate may vary significantly for some polygons. Moreover, the particle flow rate is non-trivially related to a combination of mass flow rate, particle shape and particle size. For some polygons, the particle flow rate may be lower or higher than that of the corresponding disks depending on the size comparison criteria.
format Artículo
publishedVersion
Artículo
author Goldberg, Ezequiel
Carlevaro, Manuel
Pugnaloni, Luis
author_facet Goldberg, Ezequiel
Carlevaro, Manuel
Pugnaloni, Luis
author_sort Goldberg, Ezequiel
title Flow rate of polygonal grains through a bottleneck Interplay between shape and size
title_short Flow rate of polygonal grains through a bottleneck Interplay between shape and size
title_full Flow rate of polygonal grains through a bottleneck Interplay between shape and size
title_fullStr Flow rate of polygonal grains through a bottleneck Interplay between shape and size
title_full_unstemmed Flow rate of polygonal grains through a bottleneck Interplay between shape and size
title_sort flow rate of polygonal grains through a bottleneck interplay between shape and size
publisher Papers in Physics
publishDate 2018
url http://hdl.handle.net/20.500.12272/2795
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AT carlevaromanuel flowrateofpolygonalgrainsthroughabottleneckinterplaybetweenshapeandsize
AT pugnaloniluis flowrateofpolygonalgrainsthroughabottleneckinterplaybetweenshapeandsize
bdutipo_str Repositorios
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