Effective potentials of dissipative hard spheres in granular matter Article

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Overview

abstract

• We present an experimental study of the spatial correlations of a quasi-two-dimensional dissipative gas kept in a non-static steady state via vertical shaking. From high temporal resolution images we obtain the Pair Distribution Function (PDF) for granular species with different restitution coefficients. Effective potentials for the interparticle interaction are extracted using the Ornstein-Zernike equation with the Percus-Yevick closure. From both the PDFs and the corresponding effective potentials, we find a clear increase of the spatial correlation at contact with the decreasing values of the restitution coefficient. © 2009 EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg.

authors

• Bordallo-Favela R.A.
• Nahmad Molinari Yuri
• Pacheco-Molina C.A.
• Perera-Burgos J.A.
• Pérez G.
• Ramírez-Saito A.

publication date

• 2009-01-01

published in

• European Physical Journal E  Journal

Research

keywords

• Effective potentials; Experimental studies; Granular matter; Hard spheres; High temporal resolution; Inter-particle interaction; Ornstein-Zernike equations; Pair distribution functions; Restitution coefficient; Spatial correlations; Steady state; Association reactions; Distribution functions

Identity

Digital Object Identifier (DOI)

• 10.1140/epje/i2008-10432-2

Additional Document Info

start page

• 395

end page

• 400

volume

• 28

issue

• 4