5th International Conference on Advances in Solidification Processes (ICASP-5) 5th International Symposium on Cutting Edge of Computer Simulation of Solidification, Casting and Refining (CSSCR-5)

This paper summarizes the development of a computational fluid dynamics (CFD) model based on the commercial software package ANSYS-CFX, which has been used to examine the kinetics of dissolution of a single stationary Ti-N particle surrounded by moving liquid titanium. The model accounts for diffusional mass transport in the solid particle, the formation of a two-phase solid/liquid boundary layer and both advective and diffusional transport to the bulk liquid. The results have been used to estimate an effective mass transfer coefficient that may be applied in models that only consider solid-state mass transport of nitrogen. The results show that a correction is needed to the conventional Ranz-Marshall correlation to more accurately calculate the mass transfer coefficient during the Ti-N particle dissolution process.