Berlin 2012 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
DY: Fachverband Dynamik und Statistische Physik
DY 21: Granular Matter/Contact Dynamics
DY 21.2: Talk
Wednesday, March 28, 2012, 14:45–15:00, MA 144
Exploring the 'no man's land' inbetween a granular and a colloidal suspension — •Welm Pätzold1,2, Christoph Gögelein1, and Matthias Schröter1 — 1Max Planck Institute for Dynamics and Self-organisation, Göttingen — 2Georg-August-Universität Göttingen
The packing fraction in a liquid-fluidized bed depends on the suspension's viscosity. A number of empirical theories predict relations between the packing fraction and the necessary fluid velocity to obtain said packing fraction. We used a fluidized bed to investigate the fluidization and sedimentation processes of monodisperse glass spheres in the lower limits of the granular regime (down to 20 microns in diameter). We'll present data on the packing fraction versus the flow rate and test the above mentioned models.