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TECHNICAL PAPERS: Evaporation, Boiling, and Condensation

Binary Fluid Mixture and Thermocapillary Effects on the Wetting Characteristics of a Heated Curved Meniscus

[+] Author and Article Information
David M. Pratt

United States Air Force, Wright-Patterson AFB, OH 45433-7542

Kenneth D. Kihm

Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843-3123

J. Heat Transfer 125(5), 867-874 (Sep 23, 2003) (8 pages) doi:10.1115/1.1599372 History: Received November 22, 2002; Revised May 16, 2003; Online September 23, 2003
Copyright © 2003 by ASME
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References

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Pratt, D. M., Chang, W. S., and Hallinan, K. P., 1998, “Effects of Thermocapillary Stresses on the Capillary Limit of Capillary-Driven Heat Transfer Devices,” Proc. 11th International Heat Transfer Conference, Kyongju, Korea.
Ma,  H. B., Pratt,  D. M., and Peterson,  G. P., 1998, “Disjoining Pressure Effect on the Wetting Characteristics in a Capillary Pore,” Microscale Thermophys. Eng., 2(4), pp. 283–297.
Pratt,  D. M., and Hallinan,  K. P., 1997, “Thermocapillary Effects on the Wetting Characteristics of a Heated Curved Meniscus,” J. Thermophys. Heat Transfer, 11(4), pp. 519–525.
Ehrhard,  P., and Davis,  S. H., 1991, “Non-Isothermal Spreading of Liquid Drops on Horizontal Plates,” J. Fluid Mech., 229, pp. 365–388.
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Chan,  S. H., and Zhang,  W., 1994, “Rewetting Theory and the Dryout Heat Flux of Smooth and Grooved Plates With a Uniform Heating,” ASME J. Heat Transfer, 116(1), pp. 173–179.
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Reddy,  R. P., and Lienhard,  J. H., 1989, “The Peak Boiling Heat Flux in Saturated Ethanol-Water Mixtures,” ASME J. Heat Transfer, 111, pp. 480–486.
Avedisian, C. T., and Purdy, D. J., 1993, “Experimental Study of Pool Boiling Critical Heat Flux of Binary Fluid Mixtures on an Infinite Horizontal Surface,” Proceedings of 1993 ASME International Electronics Packaging Conference, 2 , pp. 909–915.
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He, O., 1996, “Novel Microscale Flow Field Measurement Technique for Extracting Fundamental Physics of Dynamic Thin Films,” Ph.D. dissertation, Dept. of Mechanical and Aerospace Engineering, Univ. of Dayton, Dayton, OH.
Pratt,  D. M., Brown,  J. R., and Hallinan,  K. P., 1998, “Thermocapillary Effects on the Stability of a Heated, Curved Meniscus,” ASME J. Heat Transfer, 120, pp. 220–226.

Figures

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Temperature at the meniscus versus input power-condenser temperature is 25°C
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Energy balance at the meniscus to estimate the amount of heat transfer into the meniscus
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Heat transferred into the meniscus versus total heat input for a fixed condenser temperature of 25°C
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Capillary pumping potential versus wall temperature gradient
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Contact angle versus liquid temperature for pure pentane and pure decane
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Capillary pumping potential versus wall temperature gradient for decane concentrations: (a) condenser temperature at 5°C, (b) 15°C, and (c) 25°C.
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Capillary pumping potential versus wall temperature gradient: (a) Pure pentane, (b) 3% decane, (c) 5% decane, and (d) 10% decane in volume in the mixture with pentane.  
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Experimental setup of the single pore evaporator capillary pumped loop (CPL) placed in a vacuum chamber
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Schematic of the single pore capillary pumped loop
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Binary mixture meniscus inside a capillary tube with an induced temperature gradient by wall heating and a concentration gradient by distillation of a more volatile working fluid
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Liquid-vapor interface of a binary mixture working fluid with heated pore wall

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