Stationary state volume fluctuations in a granular medium

Schröter M, Swinney HL, Goldman DI (2005)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2005

Journal

Physical Review E American Physical Society (APS)

Book Volume: 71

Journal Issue: 3

DOI: 10.1103/PhysRevE.71.030301

Abstract

A statistical description of static granular material requires ergodic sampling of the phase space spanned by the different configurations of the particles. We periodically fluidize a column of glass beads and find that the sequence of volume fractions phi of postfluidized states is history independent and Gaussian distributed about a stationary state. The standard deviation of phi exhibits, as a function of phi, a minimum corresponding to a maximum in the number of statistically independent regions. Measurements of the fluctuations enable us to determine the compactivity X, a temperaturelike state variable introduced in the statistical theory of Edwards and Oakeshott [Physica A 157, 1080 (1989)].

Authors with CRIS profile

Matthias Schröter Lehrstuhl für Multiscale Simulation of Particulate Systems

Involved external institutions

University of Texas at Austin US United States (USA) (US)

How to cite

APA:

Schröter, M., Swinney, H.L., & Goldman, D.I. (2005). Stationary state volume fluctuations in a granular medium. Physical Review E, 71(3). https://dx.doi.org/10.1103/PhysRevE.71.030301

MLA:

Schröter, Matthias, Harry L. Swinney, and Daniel I. Goldman. "Stationary state volume fluctuations in a granular medium." Physical Review E 71.3 (2005).

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