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Thermal convection during Bridgman crystal growth (1984)

Carlson, Frederick M. ; Crouch, Roger K. ; Fripp, Archibald L.

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Publication Date: 2011-08-19

Description: Numerical experiments are used to study thermally driven flows which occur during vertical Bridgman crystal growth of a single component fluid. The solid-liquid interface was specified as parabolic and flow patterns were calculated for various insulation thicknesses, Grashof, Prandtl, and Biot numbers. When the melt is on top and the gravity vector is axially downward it is shown that flow persists as long as a radial temperature gradient is present. If the interface is convex, as viewed from the liquid, a single cell is observed. A concave interface exhibits multiple counterrotating cells. The insulation thickness and Grashof, Prandtl, and Biot numbers influence the flow in a quantitative manner.

Keywords: FLUID MECHANICS AND HEAT TRANSFER

Type: Journal of Crystal Growth (ISSN 0022-0248); 68; 747-756

Format: text

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