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NUMERICAL STUDY OF HEAT AND MASS TRANSFER DURING DIRECTIONAL SOLIDIFICATION

DOI: 10.1615/ICHMT.1997.IntSymLiqTwoPhaseFlowTranspPhenCHT.590
8 pages

Andre Lamazouade
Département de Modélisation Numérique, Institut de Recherche sur les Phénomènes Hors Equilibre, Unité Mixte de Recherche CNRS 6594, 1, rue Honnorat, 13003 Marseille, France

Dominique Morvan
School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, Australia 2052

Patrick Bontoux
Département de Modélisation Numérique, Institut de Recherche sur les Phénomènes Hors Equilibre, Unité Mixte de Recherche CNRS 6594, 1, rue Honnorat, 13003 Marseille, France

Graham de Vahl Davis
University of New South Wales, Kensington, NSW, Australia

Abstrakt

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.

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