Effect of a forced Couette flow on coupled convective and morphological instabilities during unidirectional solidification
The effect of a forced Couette flow, parallel to a horizontal crystal-melt interface during
directional solidification of an alloy of lead containing tin, on the onset of convective and
morphological instabilities, is calculated numerically via a linear stability analysis. Such a
flow does not affect perturbations with wave vectors perpendicular to the flow. For
perturbations with wave vectors parallel to the flow, the onset of morphological instability is
somewhat suppressed and thermosolutal convection is greatly suppressed. When …
directional solidification of an alloy of lead containing tin, on the onset of convective and
morphological instabilities, is calculated numerically via a linear stability analysis. Such a
flow does not affect perturbations with wave vectors perpendicular to the flow. For
perturbations with wave vectors parallel to the flow, the onset of morphological instability is
somewhat suppressed and thermosolutal convection is greatly suppressed. When …
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