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

Autores
Goldberg, Ezequiel; Carlevaro, Carlos Manuel; Pugnaloni, Luis Ariel
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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, 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.
Instituto de Física de Líquidos y Sistemas Biológicos
Materia
Física
Granular flow
Non-circular particles
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/85815
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/85815
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Flow rate of polygonal grains through a bottleneck: interplay between shape and sizeGoldberg, EzequielCarlevaro, Carlos ManuelPugnaloni, Luis ArielFísicaGranular flowNon-circular particlesWe 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, 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.Instituto de Física de Líquidos y Sistemas Biológicos2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/85815enginfo:eu-repo/semantics/altIdentifier/issn/1852-4249info:eu-repo/semantics/altIdentifier/doi/10.4279/PIP.070016info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:16:55Zoai:sedici.unlp.edu.ar:10915/85815Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:55.578SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Flow rate of polygonal grains through a bottleneck: interplay between shape and size
title Flow rate of polygonal grains through a bottleneck: interplay between shape and size
spellingShingle Flow rate of polygonal grains through a bottleneck: interplay between shape and size
Goldberg, Ezequiel
Física
Granular flow
Non-circular particles
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
dc.creator.none.fl_str_mv Goldberg, Ezequiel
Carlevaro, Carlos Manuel
Pugnaloni, Luis Ariel
author Goldberg, Ezequiel
author_facet Goldberg, Ezequiel
Carlevaro, Carlos Manuel
Pugnaloni, Luis Ariel
author_role author
author2 Carlevaro, Carlos Manuel
Pugnaloni, Luis Ariel
author2_role author
author
dc.subject.none.fl_str_mv Física
Granular flow
Non-circular particles
topic Física
Granular flow
Non-circular particles
dc.description.none.fl_txt_mv 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, 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.
Instituto de Física de Líquidos y Sistemas Biológicos
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, 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.
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/85815
url http://sedici.unlp.edu.ar/handle/10915/85815
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1852-4249
info:eu-repo/semantics/altIdentifier/doi/10.4279/PIP.070016
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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