Temperature distribution in driven granular mixtures does not depend on mechanism of energy dissipation
We study analytically and numerically the distribution of granular temperatures in granular mixtures for different dissipation mechanisms of inelastic inter-particle collisions. Both driven and force-free systems are analyzed. We demonstrate that the simplified model of a constant restitution coeffi...
Gespeichert in:
Hauptverfasser: | , , |
---|---|
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | We study analytically and numerically the distribution of granular
temperatures in granular mixtures for different dissipation mechanisms of
inelastic inter-particle collisions. Both driven and force-free systems are
analyzed. We demonstrate that the simplified model of a constant restitution
coefficient fails to predict even qualitatively a granular temperature
distribution in a homogeneous cooling state. At the same time we reveal for
driven systems a stunning result -- the distribution of temperatures in
granular mixtures is universal. That is, it does not depend on a particular
dissipation mechanism of inter-particles collisions, provided the size
distributions of particles is steep enough. The results of the analytic theory
are compared with simulation results obtained by the direct simulation Monte
Carlo (DSMC). The agreement between the theory and simulations is perfect. The
reported results may have important consequences for fundamental science as
well as for numerous application, e.g. for the experimental modelling in a lab
of natural processes. |
---|---|
DOI: | 10.48550/arxiv.1911.05069 |