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Flow-induced morphological instabilities - The rotating disc (1988)

Davis, S. H. ; Brattkus, K.

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Publication Date: 2011-08-19

Description: The morphological stability of a rotating and solidifying disk is investigated under the assumption that delta, the thickness of the viscous boundary layer, is much larger than delta(c), the thickness of the solute boundary layer. It is found that axisymmetric disturbances with wavelengths comparable to delta respond to nonparallel flow effects and have stability characteristics quite different from disturbances in a parallel flow. These long waves are unstable because of the nonparallel flow and would decay without it. This analysis thus identifies a new mechanism of morphological change induced by flow.

Keywords: FLUID MECHANICS AND HEAT TRANSFER

Type: Journal of Crystal Growth (ISSN 0022-0248); 87; 4, Ma; 385-396

Format: text

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