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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN 印刷: 2152-5102
ISSN オンライン: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v30.i5.20
12 pages

Heat Transfer in 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
Santosh Viswanadham
Department of Mechanical Engineering, Cleveland State University Cleveland, Ohio 44115-2425, USA
Asad Salem
Department of Engineering Technology, Cleveland State University Cleveland, Ohio 44115-2425, USA
Larry W. Byrd
Thermal Structures Branch, Air Vehicles Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA

要約

The objective of the present study is to determine the detailed transport physics of enhanced capillary pumped heat transport concepts utilizing binary fluid mixtures. The introduction of a small amount of a less volatile fluid with a higher surface tension into the working fluid will increase the capillary pumping potential in capillary heat transfer devices. An evaporating thin film was modeled by considering the concentration and thermal gradients. Lubrication theory was used to describe the velocity field by taking interfacial thermocapillary stresses into account. The mass flow rate of evaporation, heat flux and heat transfer coefficient were evaluated for various concentrations of the binary fluid. It is found that there is an optimal concentration of the binary fluid below which the heat transfer rate increases.


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