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ISSN Imprimir: 2152-5102
ISSN On-line: 2152-5110
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Rupture of Thin Liquid Films Utilizing Binary Fluid Mixtures
RESUMO
The dynamic rupture process of a thin liquid film involving a binary fluid has been analyzed by investigating the stability to finite amplitude disturbances. The dynamics of the liquid film is formulated using the balance equations including a body force term due to van der Waals attractions. The governing equation for the film thickness was solved by finite difference method as part of an initial value problem for spatial periodic boundary conditions. The results indicate that the interfacial surface tension gradients with concentration and temperature have significant effect on the film rupture. Film rupture may be delayed by introducing a small amount of a less volatile fluid with a higher surface tension into the working fluid.