Exact predictions from the Edwards ensemble versus realistic simulations of tapped narrow two-dimensional granular columns

We simulate, via a discrete element method, the tapping of a narrow column of disks under gravity. For frictionless disks, this system has a simple analytical expression for the density of states in the Edwards volume ensemble. We compare the predictions of the ensemble at constant compactivity agai...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Irastorza, Ramiro Miguel, Carlevaro, Carlos Manuel, Pugnaloni, Luis Ariel
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2013
Materias:
Física
Granular matter
Jamming
Packing
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/97228
https://ri.conicet.gov.ar/11336/23421
http://iopscience.iop.org/article/10.1088/1742-5468/2013/12/P12012/meta
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-97228
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Granular matter
Jamming
Packing
spellingShingle Física
Granular matter
Jamming
Packing
Irastorza, Ramiro Miguel
Carlevaro, Carlos Manuel
Pugnaloni, Luis Ariel
Exact predictions from the Edwards ensemble versus realistic simulations of tapped narrow two-dimensional granular columns
topic_facet Física
Granular matter
Jamming
Packing
description We simulate, via a discrete element method, the tapping of a narrow column of disks under gravity. For frictionless disks, this system has a simple analytical expression for the density of states in the Edwards volume ensemble. We compare the predictions of the ensemble at constant compactivity against the results for the steady states obtained in the simulations. We show that the steady states cannot be properly described since the microstates sampled are not in correspondence with the predicted distributions, suggesting that the postulates of flat measure and ergodicity are, either or both, invalid for this simple realization of a static granular system. However, we show that certain qualitative features of the volume fluctuations which are difficult to predict from simple arguments are captured by the theory.
format Articulo
Preprint
author Irastorza, Ramiro Miguel
Carlevaro, Carlos Manuel
Pugnaloni, Luis Ariel
author_facet Irastorza, Ramiro Miguel
Carlevaro, Carlos Manuel
Pugnaloni, Luis Ariel
author_sort Irastorza, Ramiro Miguel
title Exact predictions from the Edwards ensemble versus realistic simulations of tapped narrow two-dimensional granular columns
title_short Exact predictions from the Edwards ensemble versus realistic simulations of tapped narrow two-dimensional granular columns
title_full Exact predictions from the Edwards ensemble versus realistic simulations of tapped narrow two-dimensional granular columns
title_fullStr Exact predictions from the Edwards ensemble versus realistic simulations of tapped narrow two-dimensional granular columns
title_full_unstemmed Exact predictions from the Edwards ensemble versus realistic simulations of tapped narrow two-dimensional granular columns
title_sort exact predictions from the edwards ensemble versus realistic simulations of tapped narrow two-dimensional granular columns
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/97228
https://ri.conicet.gov.ar/11336/23421
http://iopscience.iop.org/article/10.1088/1742-5468/2013/12/P12012/meta
work_keys_str_mv AT irastorzaramiromiguel exactpredictionsfromtheedwardsensembleversusrealisticsimulationsoftappednarrowtwodimensionalgranularcolumns
AT carlevarocarlosmanuel exactpredictionsfromtheedwardsensembleversusrealisticsimulationsoftappednarrowtwodimensionalgranularcolumns
AT pugnaloniluisariel exactpredictionsfromtheedwardsensembleversusrealisticsimulationsoftappednarrowtwodimensionalgranularcolumns
bdutipo_str Repositorios
_version_ 1764820492472025089

Ejemplares similares