CFD Studies of Dross Particle Tracking in a Galvanizing Bath

Suspended dross particles in turbulent flow can interact with the moving roll and eventually accumulate on it. This study examines particle-surface interactions near the sink roll surface in a galvanizing bath using computational fluid dynamics. According to dross agglomeration on the roll, it is significant to consider the collisions effect, although it makes the simulation computationally expensive. In this research multiphase fluid flow is simulated by coupling the Discrete Element Method for solid phase with computational fluid dynamics for fluid phase known as CFD-DEM. This model considers both particle-wall and particle-particle interactions. It treats the bath fluid as a continuum, whereas the dross particles as a discrete phase. Simulation has been carried out for 1000 dross particles. The model is modified by incorporating of a User Defined Function to study the number of particle collisions with the roll surface. Particles trajectories and particle-surface interaction are displayed and discussed.