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Thermocapillary free boundaries in crystal growth

Published online by Cambridge University Press:  21 April 2006

C. Cuvelier
Affiliation:
Delft University of Technology, Department of Mathematics and Informatics, Delft, The Netherlands
J. M. Driessen
Affiliation:
Delft University of Technology, Department of Mathematics and Informatics, Delft, The Netherlands Present address: Koninklijke/Shell-Laboratorium, Amsterdam, Shell Research bv, Amsterdam, The Netherlands

Abstract

In this paper a two-dimensional free boundary arising from the steady thermo-capillary flow in a viscous incompressible fluid is studied numerically. The problem is considered in the context of the open-boat crystal-growth technique. The motion of the fluid is governed by the Navier-Stokes equations coupled with the heat equation. The problem is solved numerically by a finite-element-method discretization. Three iterative methods are introduced for the computation of the free boundary. The non-dimensional form of the problem gives rise to the following characteristic parameters: Reynolds, Grashof, Prandtl, Marangoni, Bond, Ohnesorge, Biot numbers. The influence of these parameters on the flow field, the temperature distribution and the shape of the free boundary is studied.

Type
Research Article
Copyright
© 1986 Cambridge University Press

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