WAVE REGIMES ON A FERROMAGNETIC VISCOUS-FLUID FILM FLOWING DOWN A VERTICAL CYLINDER

摘要

Axially symmetrical waves on the surface of a ferromagnetic viscous fluid film flowing down a cylindrical conductor with alternating current are considered. In this case, in addition to the gravitational force, the film is affected by a spatially non-uniform time-dependent magnetic field. In the long-wave approximation, a model equation for the deviation of the film thickness from its undisturbed value is obtained. Some numerical solutions of this equation are reported.