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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.9

ISSN Druckformat: 2152-5102
ISSN Online: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v25.i1-3.160
pages 189-201

Stability and Dynamics of Thin Heated Liquid Films

S. G. Bancoff
Northwestern University, Department of Chemical Engineering, Evanston, USA

ABSTRAKT

Some applications of the dynamical theory of thin liquid films on a solid surfaces, subject to heat transfer, are presented. Thermocapillary and vapor recoil effects are destabilizing, while hydrostatic pressure and surface tension effects tend to stabilize the film. Gravitational surface waves promote wave steepening and possible wave breaking. The growth of nonlinear waves may result in equilibration and "permanent" two-dimensional waves, which can, however, be destroyed by secondary wave growth in the transverse direction. The phenomena which are found include downwards fingering, which may lead to local dryout, and the formation of longitudinal rolls, which may lead to rivulet formation on a heated surface.


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