Vibrated Fluids

Physics Depatment, University of Michigan

I will present experimental results and simple models on three unusual phenomenon observed in harmonically driven fluids.   First I will present on persistent holes in particulate suspensions in a Faraday system.  Under sufficiently strong vibration, these fluids are able to sustain cavities which span the layer thickness.  The second phenomenon is strip waves in worm-like micellar solutions.  These fluids exhibit a transition above an acceleration threshold above which the fluid aggregates into strips of very large amplitude waves.  The third phenomenon is drops of Newtonian fluids which climb surfaces against the direction of gravity.