Integrated Computational Materials, Process and Product Engineering – IC-MPPE 2022

In this paper we present the results of the simulation of a dross particle growth from a zinc melt. It is shown that despite the isotropy of the interfacial kinetics used in the simulation, the hydrodynamics alone could introduce an anisotropy in dross particle growth, similar to the natural anisotropy. The natural interfacial kinetics in faceted crystal growth are responsible for the faster growth of some facets and therefore their disappearance. A front tracking method with a cellular automaton approach was applied to the growth of free Fe2Al5 particle in a Zn melt at constant temperature. The dross particle growth was found to be dependent of the magnitude velocity flow and on the orientation of the flow melt with respect to the dross particle orientation. The boundary diffusion layer is modified by the flow and therefore the mass transfer and consequently the growth. To obtain in simulation the disappearance of a facet, longer simulation times should be done, however a good qualitative comparison was observed with the experimentally observed dross particles.