RESUMO

This study includes the numerical simulation of the crystal growth in the vertical Bridgman configuration. The effects of moving temperature boundary conditions on the accuracy of predicted shape of the solid - liquid interface during solidification are investigated. Two cases are presented to model vertical Bridgman crystal growth: firstly one with a moving temperature profile imposed along vertical wall of motionless ampoule and secondly one with the ampoule translated with constant speed and fixed temperature boundary conditions. Numerical solutions are obtained based on a fixed grid single domain (enthalpy) method using two different approaches - finite volume with primitive variables and finite differences vorticity -stream function formulation.