Abstract
The influence of latent heat and natural convection upon the melt–crystal interface in a vertical Bridgman–Stockbarger crystal growth system is studied 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 equivalent medium are evaluated from average values which characterize each phase present in the system. The numerical resolution is performed using a finite 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 consequences upon the melt–crystal interface are also analyzed.
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