Mon March 6th 2017
16:00 – 17:00
Seminar Dancing of wet particles: Impacts, assembly and pattern formation
Kai Huang


Towards a better understanding of the dynamics of wet granular matter, our attempts start with the coefficient of restitution (COR) that characterizes the energy dissipation at a particle level. The questions associated are: How does the COR depend on the impact velocity, various liquid and particle properties? Can we have an analytical prediction of COR for wet particle impacts?
In a monolayer system, I will show how screw-nut shaped particles under vertical vibrations assembly themselves into a rotator-crystal state with translational but no orientational order, and explain how the broken circular symmetry of particle shape leads to the preference to rotate.
Finally, I will discuss the pattern forming scenario in vibrofludized wet granular matter, from three armed rotating spirals representing propagating kink-wave fronts, to the density-wave fronts that emerge on the brink of a wet granular condensation (gas-liquid-like transition). The pattern forming mechanisms will be discussed based on an analysis of the mobility of individual particles.
Go back to the agenda.

The 10th Complex Motion in Fluids 2021
Max Planck Gesellschaft
Centre for Scientific Computing