Taylor-Couette Instabilities with a Crystal-Melt Interface

28 June 2001

Summary

•An otherwise stable interface is destabilized by the flow

•Taylor-Couette flow is strongly destabilized for materials with moderate Prandtl numbers

•Organics and oxides have moderate-to-large Prandtl numbers; metals and semiconductors have small Prandtl numbers. (For solute diffusion, the Schmidt number is usually large.)

•Weakly-nonlinear analysis hasn’t been done for these problems

•General understanding of when strong coupling will occur is lacking


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