Numerical simulation of a 2-D crystal growth problem in vertical Bridgman-Stockbarger furnace: latent heat effect and crystal-melt interface morphology
D. Morvan et al., Numerical simulation of a 2-D crystal growth problem in vertical Bridgman-Stockbarger furnace: latent heat effect and crystal-melt interface morphology, INT J HEAT, 42(3), 1999, pp. 573-579
The influence of latent heat and natural convection upon the melt-crystal i
nterface in a vertical Bridgman-Stockbarger crystal growth system is studie
d by numerical simulation. The temperature and velocity field are computed
using an average technique which consists of representing the solid-liquid
mixture as a single continuum medium. The physical properties of the equiva
lent medium are evaluated from average values which characterize each phase
present in the system. The numerical resolution is performed using a finit
e volume method including a high-order upwind scheme and PISO algorithm for
the pressure-velocity coupling. The numerical results show the effects of
latent heat and gravity magnitude upon the flow pattern in the melt. The co
nsequences upon the melt-crystal interface are also analyzed. (C) 1998 Else
vier Science Ltd. All rights reserved.