2007
DOI: 10.1016/j.ijheatmasstransfer.2007.01.052
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Abstract: An evaporating meniscus in a microchannel is investigated through an augmented Young-Laplace model and the kinetic theory-based expression for mass transport across a liquid-vapor interface. The complete expression for mass transport is employed without any approximations and boundary conditions for the film profile are developed. The thin-film and the intrinsic-meniscus regions are distinguished based on the disjoining pressure variation along the meniscus. While heat transfer in the thin-film region is found… Show more

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Cited by 318 publications
(182 citation statements)
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(57 reference statements)
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“…Thin-film evaporation, 12 which takes place near a solid-liquid-vapor junction, has long been believed to be the dominant mode of heat transfer in such systems. The efficacy of heat transfer in thin films is attributed to a high liquid pressure ͑termed as disjoining pressure by Derjaguin 13 ͒ gradient, which results in liquid being pulled into the thin-film region, as well as the very low thermal resistance resulting from the small film thickness.…”
Section: Introductionmentioning
confidence: 99%
“…Thin-film evaporation, 12 which takes place near a solid-liquid-vapor junction, has long been believed to be the dominant mode of heat transfer in such systems. The efficacy of heat transfer in thin films is attributed to a high liquid pressure ͑termed as disjoining pressure by Derjaguin 13 ͒ gradient, which results in liquid being pulled into the thin-film region, as well as the very low thermal resistance resulting from the small film thickness.…”
Section: Introductionmentioning
confidence: 99%
“…This model resolves the non-isothermal interface conditions that result in thermocapillary convection and non-uniform evaporative mass flux along the interface (Figure 22). After validation against an analytical model for evaporation from a channel [122], a comprehensive investigation of the local and area-averaged evaporative mass flux was performed as a function of contact angle, surface superheat, pore geometry, and length scale. Similar modeling approaches that account for non-isothermal evaporation from a quasi-static liquid meniscus are presented in the literature.…”
Section: Advances In Characterization Methodsmentioning
confidence: 99%
“…This formulation can be used to predict the detailed evaporation characteristics of an extended liquid film [121] or a meniscus in a simplified geometry [122], but generalized analytical expressions for evaporation from saturated wick structures are not available.…”
Section: Simplified Analytical Predictionmentioning
confidence: 99%
“…In addition to the above trends, variance in channel width has also been studied, such as in Wang et al (2007). The effect of an increasing channel width, was an increased thin-film length (Qu et al 2002;Zhao et al, 2011).…”
Section: Varying Thermophysical Properties Slip Boundary Conditionmentioning
confidence: 99%