Titre :
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Numerical simulation of a 2D crystal growth problem in vertical Bridgman-Stockberger furnace : latent heat effect and crystal-melt interface morphology
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Auteurs :
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D. Morvan ;
M. El Ganaoui ;
P. Bontoux
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Type de document :
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article/chapitre/communication
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Année de publication :
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1999
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Format :
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p.573-579
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Langues:
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= Anglais
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Mots-clés:
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CRISTALLISATION
;
SIMULATION NUMERIQUE
;
METHODE DES ELEMENTS FINIS
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Résumé :
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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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Source :
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International journal of heat and mass transfer, vol 42
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