HEAT TRANSFER IN A THIN LIQUID FILM IN THE PRESENCE OF AN ELECTRIC FIELD |
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| Authors: | Rama Subba Reddy Gorla Jorge E Gatica Bahman Ghorashi Pijarn Ineure Larry W Byrd |
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| Affiliation: |
a Cleveland State University, Department of Mechanical Engineering, Cleveland, Ohio, USA
b Cleveland State University, Department of Chemical Engineering, Cleveland, Ohio, USA
c Thermal Structures Branch, Air Vehicles Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, Ohio, USA |
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| Abstract: | Heat transfer enhancement in an evaporating thin liquid film utilizing a electric field under isothermal interfacial condition is presented. A new mathematical model subjected to van der Waals attractive forces, capillary pressure, and an electric field is developed to describe the heat transfer enhancement in the evaporating thin liquid film. The effect of the electrostatic field on the curvature of the thin film, evaporative flux, pressure gradient distribution, heat flux, and heat transfer coefficient in the thin film is presented. The results show that applying an electric field can enhance heat transfer in a thin liquid film significantly. In addition, utilizing electric fields on the evaporating film will be a way to expand the extended meniscus region to attain high heat transfer coefficients and high rates of heat flux. |
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| Keywords: | Thin films Evaporating films Heat transfer Electric field Disjointing pressure Capillary action |
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