Abstract
The freezing of pure tin in a thick-walled annular crucible under the influence of laminar thermal bouyancy and thermocapillary convection is numerically investigated. The problem analyzed is conjugate and incorporates both a free surface and moving phase front. A two-dimensional dynamic model is implemented using a previously proposed fixed-grid enthalpy based formulation in which the coupled momentum and energy equations are solved in their primitive variable form. The problem examined here includes important extensions to problems formerly used for verification of this method. Good agreement exists between numerically predicted solidification fronts and those experimentally determined by prior investigators.
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