Dynamics of rotating suspensions

A suspension of non-Brownian settling particles in a completely filled horizontal rotating cylinder demonstrates a rich array of concentration and velocity patterns. Individual flow states, or phases, are studied using both side and cross-sectional imaging to examine the detailed flow structures. The overall steady state phase diagram of the system is mapped out as a function of the rotation rate and solvent viscosity. Theoretical attempts are made to understand the dynamics of the stable band phase in the rotating suspension.