Multifractal intermittency in granular flow through bottlenecks

We experimentally analyze the intermittent nature of granular silo flow when the discharge is controlled by an extracting belt at the bottom. We discover the existence of four different scenarios. For low extraction rates, the system is characterized by an on-off intermittency. When the extraction r...

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Detalhes bibliográficos
Autores: Gella, D., Zuriguel, Iker, Ortín, Jordi, 1959-
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Recursos:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/145326
Acesso em linha:https://hdl.handle.net/2445/145326
Access Level:acceso abierto
Palavra-chave:Materials granulars
Física estadística
Granular materials
Statistical physics
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spelling Multifractal intermittency in granular flow through bottlenecksGella, D.Zuriguel, IkerOrtín, Jordi, 1959-Materials granularsFísica estadísticaGranular materialsStatistical physicsWe experimentally analyze the intermittent nature of granular silo flow when the discharge is controlled by an extracting belt at the bottom. We discover the existence of four different scenarios. For low extraction rates, the system is characterized by an on-off intermittency. When the extraction rate is increased the structure functions of the grains velocity increments, calculated for different lag times, reveal the emergence of multifractal intermittency. Finally, for very high extraction rates that approach the purely gravitational discharge, we observe that the dynamics become dependent on the outlet size. For large orifices the behavior is monofractal, whereas for small ones, the fluctuations of the velocity increments deviate from Gaussianity even for very large time lags.American Physical Society2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/145326Articles publicats en revistes (Física de la Matèria Condensada)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.123.218004Physical Review Letters, 2019, vol. 123, num. 21, p. 218004https://doi.org/10.1103/PhysRevLett.123.218004(c) American Physical Society, 2019info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1453262026-05-27T06:46:51Z
dc.title.none.fl_str_mv Multifractal intermittency in granular flow through bottlenecks
title Multifractal intermittency in granular flow through bottlenecks
spellingShingle Multifractal intermittency in granular flow through bottlenecks
Gella, D.
Materials granulars
Física estadística
Granular materials
Statistical physics
title_short Multifractal intermittency in granular flow through bottlenecks
title_full Multifractal intermittency in granular flow through bottlenecks
title_fullStr Multifractal intermittency in granular flow through bottlenecks
title_full_unstemmed Multifractal intermittency in granular flow through bottlenecks
title_sort Multifractal intermittency in granular flow through bottlenecks
dc.creator.none.fl_str_mv Gella, D.
Zuriguel, Iker
Ortín, Jordi, 1959-
author Gella, D.
author_facet Gella, D.
Zuriguel, Iker
Ortín, Jordi, 1959-
author_role author
author2 Zuriguel, Iker
Ortín, Jordi, 1959-
author2_role author
author
dc.subject.none.fl_str_mv Materials granulars
Física estadística
Granular materials
Statistical physics
topic Materials granulars
Física estadística
Granular materials
Statistical physics
description We experimentally analyze the intermittent nature of granular silo flow when the discharge is controlled by an extracting belt at the bottom. We discover the existence of four different scenarios. For low extraction rates, the system is characterized by an on-off intermittency. When the extraction rate is increased the structure functions of the grains velocity increments, calculated for different lag times, reveal the emergence of multifractal intermittency. Finally, for very high extraction rates that approach the purely gravitational discharge, we observe that the dynamics become dependent on the outlet size. For large orifices the behavior is monofractal, whereas for small ones, the fluctuations of the velocity increments deviate from Gaussianity even for very large time lags.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/145326
url https://hdl.handle.net/2445/145326
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.123.218004
Physical Review Letters, 2019, vol. 123, num. 21, p. 218004
https://doi.org/10.1103/PhysRevLett.123.218004
dc.rights.none.fl_str_mv (c) American Physical Society, 2019
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Physical Society, 2019
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Física de la Matèria Condensada)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301629

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