Abstract
A transient finite-element numerical simulation of the heat transfer and melt convection has been performed for the vertical Bridgman growth configuration in order to investigate the solid-liquid interface deflection. The numerical simulation is realized with the help of the finite element software FIDAP TM . A free surface model is applied for the description of the moving solid-liquid interface. By a dimensional analysis of the factors which affect the interface deflection, the influence of the non-dimensional ratio δ = V I H/(k L G L ) on the interface curvature is studied. The dimensionless interface curvatures are computed for different values of the interface rate V I , the latent heat of fusion H, the liquid thermal gradient G L and the thermal conductivity of liquid k L . Finally a simple expression which contains the quantity δ is proposed for the interface deflection.
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