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DY: Fachverband Dynamik und Statistische Physik

DY 12: Poster I

DY 12.34: Poster

Dienstag, 24. März 2009, 14:30–16:30, P1A

A Sinai-Billiard Model for Wet Granular Matter — •Franziska Glaßmeier, Jürgen Vollmer, and Martin Brinkmann — Dept. Dynamics of Complex Fluids, MPI for Dynamics & Self-Organization, 37073 Göttingen, Germany

We generalize the collision rules of the Sinai billiard to mimic collisions of two wet disks in a system with periodic boundary conditions. Within this framework we discuss the phase-space structure of invariant measures, and the entropy production involved in free cooling. Our results are compared to numerical data for the free cooling of large assemblies of wet disks.