Détail de la notice
Titre du Document
Computer generation of dense polydisperse sphere packings
Auteur(s)
KANSAL Anuraag R. ; TORQUATO Salvatore ; STILLINGER Frank H.
Résumé
We present an extension of the Lubachevsky and Stillinger [J. Stat. Phys. 60, 561 (1990)] packing algorithm to generate packings of polydisperse spheres. The original Lubachevsky-Stillinger algorithm is a nonequilibrium protocol that allows a set of monodisperse spheres to grow slowly over time eventually reaching an asymptotic maximum packing fraction. We use this protocol to pack polydisperse spheres in three dimensions by making the growth rate of a sphere proportional to its initial diameter. This allows us to specify a size distribution of spheres, which is then preserved throughout the growth process (except the mean diameter increases). We use this method to study the packing of bidisperse sphere systems in detail. The packing fractions of the configurations generated with our method are consistent with both previously generated experimental and simulated packings over a large range of volume ratios. Our modified Lubachevsky-Stillinger protocol, however, extends the range of sphere volume ratios well beyond that which has been previously considered using simulation. In doing so, it allows both small volume ratios and large volume ratios to be studied within a single framework. We also show that the modified Lubachevsky-Stillinger algorithm is appreciably more efficient than a recursive packing method. © 2002 American Institute of Physics.
Editeur
American Institute of Physics
Identifiant
ISSN : 0021-9606 CODEN : JCPSA6
Source
The Journal of chemical physics A. 2002, vol. 117, n° 18, pp. 8212-8218
Langue
Anglais
Copyright
Copyright 2002 American Institute of Physics. All rights reserved.
Pour les membres de la communauté du CNRS, ce document est autorisé à la reproduction à titre gratuit.
Pour les membres des communautés hors CNRS, la reproduction de ce document à titre onéreux sera fournie sous réserve d’autorisation du Centre Français d’exploitation du droit de Copie.

Pour bénéficier de nos services (strictement destinés aux membres de la communauté CNRS (Centre National de la Recherche Scientifique), de l'ESR français (Enseignement Supérieur et Recherche), et du secteur public français & étranger) :