Morphological Stability of Directional Solidification in a Centrifugal Field
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Morphological stability of crystallization front is considered in the case when solutal convection in a melt is driven by the centrifugal and Coriolis forces. Temperature field is assumed to be a linear function and a vector of an angular rate is perpendicular to a growth direction. It is shown that the effect of Coriolis force has a dual character. At first, increase of Coriolis force lead to an instability of crystallization front. But when Taylor number exceeds some critical value, crystallization front becomes stable again and Coriolis force surpass practically completely the influence of the convection.
KeywordsRayleigh Number Density Profile Directional Solidification Coriolis Force Solidification Front
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- 9.J.J. Favier and A. Rouzand, J. Cryst. Growth 367:64 (1983).Google Scholar