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

ISSN Print: 2152-5102
ISSN Online: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v32.i6.20
pages 662-674

Rupture of Thin Liquid Films Utilizing Binary Fluid Mixtures

Rama Subba Reddy Gorla
Department of Mechanical Engineering, Cleveland State University, Cleveland, OH, 44115 USA; Department of Mechanical Engineering, University of Akron, Akron, Ohio 44325, USA; Department of Mechanical & Civil Engineering, Purdue University Northwest, Westville, IN 46391, USA
Larry W. Byrd
Thermal Structures Branch, Air Vehicles Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA
David Kost
Department of Chemical & Biomedical Engineering, Cleveland State University, Cleveland, Ohio 44115-2425
Bahman Ghorashi
Department of Chemical & Biomedical Engineering, Cleveland State University, Cleveland, Ohio 44115-2425

ABSTRACT

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.


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