Abstract
Systematic measurements of dendrite tip radius and growth velocity in succinonitrile reveal that consideration of dendrite tip stability should be incorporated into the heat transfer theory to determine the steady-state dendritic growth condition. The dendritic stability criterion measured is 2 αd 0/ VR 2 = 0.0195, where V is the dendritic growth velocity, R is the dendritic tip radius, a is the liquid thermal diffusivity, and d 0 is a capillary length defined in the text. Several dendritic stability models are reviewed and discussed in comparison to the present experimental results.
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