Abstract
We have theoretically analyzed buoyancy-driven convection in directional solidification configurations under the influence of additional forces acting on flow on a centrifuge, the centrifugal and the Coriolis forces. The influence of centrifugation on buoyancy-driven convection in the melt depends on the following conditions: the geometrical orientation of the melt cylinder on the centrifuge, the presence of radial temperature gradients in the melt (curved crystal-melt interface), the centrifuge radius, and the rotation rate of the centrifuge. The behaviour of convection depends on the complex interaction of buoyancy and Coriolis forces. It is demonstrated by theoretical considerations and experiments that a suppression of the vigor of convection up to one order of magnitude is possible under certain conditions on the centrifuge.
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© 1997 Springer Science+Business Media New York
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Friedrich, J., Müller, G. (1997). Convection in Crystal Growth under High Gravity on a Centrifuge. In: Regel, L.L., Wilcox, W.R. (eds) Centrifugal Materials Processing. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-5941-2_2
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DOI: https://doi.org/10.1007/978-1-4615-5941-2_2
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