Abstract
The general problem of liquid layer stability is considered in the presence of body forces, and the pressure and shear perturbations generated by an external gas flow. In particular, linear stability analyses are applied to a liquid slag layer driven by a turbulent gaseous boundary layer in the presence of electromotive forces in an MHD channel. It is shown that entrainment of slag could occur in subsonic flows but that the slag layer is stable in supersonic flows. Typical results exhibit disturbance growth rates, phase velocities and disturbance frequencies as functions of liquid Reynolds number and interface shear stress. Within the restrictive assumptions of the analysis, the results show reasonable agreement with available experimental data.
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