Numerical Simulation of the Horizontal Bridgman Growth. 3. Three-Dimensional Flow

We study the generation of periodic velocity and temperature fields in a plane horizontal cruible of molten metal under the action of a horizontal temperature gradient. The gemetry and the boundary conditions are similar to those encountered in the Bridgeman growth process of semi-conductor crystals although the present paper is limited to two-dimensional flows. We use transient finite difference and finite element algorithms which lead to identical results. We demonstrate the oscillatory mechanism in two different geometries.