Dresden 2006 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
DY: Dynamik und Statistische Physik
DY 27: Granular Matter and Contact Dynamics II
DY 27.2: Vortrag
Dienstag, 28. März 2006, 16:45–17:00, SCH 251
Gas-grain simulations: the No-dqQuicksand-EffectNo-dq — •Dirk Kadau1, Eirik G. Flekkøy2, and Dietrich E. Wolf1 — 1Department of Physics, Duisburg-Essen University, D-47048 Duisburg, Germany — 2Department of Physics, University of Oslo, Postbox 1048 Blindern, 0316 Oslo, Norway
When modeling granular matter often the influence of the surrounding gas or fluid is neglected for simplicity. A simple model to couple the discrete grain dynamics to the continuous dynamics of a compressible fluid or gas is presented. As an example we investigate the quicksand phenomenon using a model where the granular system is fluidized by an upward flow. Can one really drown in quicksand or will the buoyancy be even increased by the sand grains?