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Hydrodynamic interactions in directional solidification

Published online by Cambridge University Press:  26 April 2006

Stephen H. Davis
Stephen H. Davis
Affiliation:
Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, IL 60208, USA
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Abstract

A binary liquid undergoes unidirectional solidification. The one-dimensional steady state is susceptible to morphological instability that causes the solid/liquid interface to change from a planar state to a cellular pattern. This paper examines the effects on this transition of volume-change convection, buoyancy-driven convection or forced flows. It emphasizes how flows alter stability limits, create scale and pattern changes in morphology, and create, through coupling, new instabilities. Emphasis is placed on the physical mechanisms of the interactions.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 212 , March 1990 , pp. 241 - 262
Copyright
© 1990 Cambridge University Press

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