The partition of energy for air-fluidized grains

Simple item page
dc.creatorAbate, A. R.
dc.creatorDurian, D. J.
dc.date2005-06-02
dc.date2005-08-02
dc.date.accessioned2026-07-07T06:18:37Z
dc.date.available2026-07-07T06:18:37Z
dc.descriptionThe dynamics of one and two identical spheres rolling in a nearly-levitating upflow of air obey the Langevin Equation and the Fluctuation-Dissipation Relation [Ojha et al. Nature 427, 521 (2004) and Phys. Rev. E 71, 01631 (2005)]. To probe the range of validity of this statistical mechanical description, we perturb the original experiments in four ways. First, we break the circular symmetry of the confining potential by using a stadium-shaped trap, and find that the velocity distributions remain circularly symmetric. Second, we fluidize multiple spheres of different density, and find that all have the same effective temperature. Third, we fluidize two spheres of different size, and find that the thermal analogy progressively fails according to the size ratio. Fourth, we fluidize individual grains of aspherical shape, and find that the applicability of statistical mechanics depends on whether or not the grain chatters along its length, in the direction of airflow.
dc.descriptionexperiment
dc.identifierhttps://arxiv.org/abs/cond-mat/0506058
dc.identifierhttp://arxiv.org/abs/cond-mat/0506058
dc.identifierPhys. Rev. E 72, 031305 (2005)
dc.identifierdoi:10.1103/PhysRevE.72.031305
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/94795
dc.subjectSoft Condensed Matter
dc.subjectStatistical Mechanics
dc.titleThe partition of energy for air-fluidized grains
dc.typetext

Files

Collections

arXiv