Abstract
The theorem of minimum entropy production is applied to steady and stationary periodic eutectic growth with an oscillating freezing rate. When the volume fractions of the two phases are significantly different, a finite lead distance makes the eutectic spacing λ larger than for a planar interface. Freezing rate oscillations reduce λ. If the interface is modulated on a length scale larger than λ, there can be regions with both smaller and larger λ.
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