MS27 ~ Monday, May 22, 1995 ~ 7:30 PM

Fundamental Mechanisms of Granular Flow

The importance of granular flow to the US economy cannot be overstated. Goods ranging from pharmaceuticals and foods to polymers and semiconductors depend on highly reliable, highly uniform mixing and flow of granular solids. Yet our understanding of granular flow can scarcely be described as more than primitive. We can neither qualitatively nor quantitatively analyze the effectiveness of any given mixing mechanism in advance. We do not have a widely accepted set of equations that govern granular flow. And we cannot even establish whether a given set of solids will mix or de-mix under a given stirring regimen. In this minisymposium, the speakers will discuss fundamental mechanisms that lead to extraordinary effects in the flow of solid material.

Organizer: Troy Shinbrot, Northwestern University

Patterns in Sand: Time-Dependence, Fractals and Waves
R. P. Behringer, Duke University
Convection and Size Separation in Granular Fluids
Heinrich M. Jaeger, University of Chicago
Grains in Collision: Statistical Mechanical Models of Granularity
Leo Kadanoff, University of Chicago
Mixing by Avalanche: A Geometrical Approach to Study Slow Granular Mixing
Troy Shinbrot, Organizer