Droplet formation in the rupture of a liquid film under the action of a thermal load |
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Authors: | A S Ovcharova |
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Institution: | (1) Chair of Technical Thermodynamics, Darmstadt University of Technology, Petersenstr. 30, 64287 Darmstadt, Germany |
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Abstract: | The deformation and rupture of a liquid film, suspended between two solid walls, under the action of a localized thermal load
is considered. For studying this process, a two-dimensional model is used, which describes the motion of a thin layer of a
viscous non-isothermal liquid under microgravity conditions. For modeling the dynamics of the liquid, the Navier-Stokes equations
in the “vorticity—stream function” variables are used. A numerical analysis of the influence of thermal loads on the deformation
and the mechanism of the rupture of freely suspended films is performed. Is is shown that for a certain width of the thermal
beam acting on the film free surface the rupture of the film may occur with the formation of a droplet. The results of the
solution of model problems are presented. |
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Keywords: | |
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