The partition of energy for air-fluidized grains

Details The partition of energy for air-fluidized grains The partition of energy for air-fluidized grains

2005-06-02

arxiv.org/abs/cond-mat/0506058v2

Phys. Rev. E 72, 031305 (2005)

Physics

Condensed Matter

Soft Condensed Matter

experiment

Scientific paper

10.1103/PhysRevE.72.031305

The 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.

Affiliated with

Also associated with

No associations

Rating

The partition of energy for air-fluidized grains does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The partition of energy for air-fluidized grains, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The partition of energy for air-fluidized grains will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-434567