Speaker: Vili Heinonen
Title:
"Consistent hydrodynamics for phase field crystals"


Abstract:
Phase field crystal (PFC) models have become a widely used computational tool for modeling the microstructure of crystals at diffusive time scales. PFC models manage to incorporate a reasonably accurate description of e.g. liquid-solid boundary energy, topological defects, and elastic properties into a relatively simple theory. In this talk I will give a short introduction to a coarse-grained amplitude expansion framework of the PFC model and briefly explain some limitations of overdamped dynamics usually used with PFC models. In order to try to overcome these limitations I will reformulate the dynamics for the model by coupling the system with a hydrodynamic velocity field. I will discuss the general properties of this theoretical framework and will show some computational results.