Clustering Instability in Granular Gases: A Mesoscopic Investigation

Sauro Succi (), Jane Wang () and Yue-Hong Qian ()
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Sauro Succi: Istituto Applicazioni Calcolo "M. Picone," Via del Policlinico 137, Roma, I-00161, Italy
Jane Wang: Department of Theoretical Physics, University of Oxford, Oxford, OX1 3NP, UK
Yue-Hong Qian: Department of Applied Physics, Columbia University, New York, NY 10027, USA

International Journal of Modern Physics C (IJMPC), 1997, vol. 08, issue 04, 999-1008

Abstract: We present a numerical study of the density fluctuations in granular flows in the hydrodynamic limit. By simulating the continuum equations posed for granular flows,1,2we study the onset of the density-cluster formation. Clusters are observed when the restitution coefficient of granular collision is sufficiently small. However, unlike the clusters seen in molecular dynamics simulations,3,4these macroscopic clusters appear to be transient. In the long time limit, they are damped by the viscous dissipation.

Keywords: Granular Flow; Kinetic Theory; Boltzmann Equation; BGK Model (search for similar items in EconPapers)
Date: 1997
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DOI: 10.1142/S0129183197000862

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