On the predictions for diffusion-driven evaporation of sessile droplets with interface cooling

Tran, Ha V., Nguyen, Tuan A.H., Biggs, Simon R., and Nguyen, Anh V. (2018) On the predictions for diffusion-driven evaporation of sessile droplets with interface cooling. Chemical Engineering Science, 177. pp. 417-421.

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The diffusion-driven evaporation of sessile droplets from planar surfaces is influenced by cooling at the air-liquid interface. Here, corrections to the available models for predicting the evaporation process are presented. The mass conservation for diffusion-driven evaporation is resolved by considering the effect of interface cooling on the change in density of saturated vapour along the liquid-vapour interface of sessile droplets. Corrections to the predictions for the spatial distribution of vapour density around a sessile droplet and the evaporative flux of vapour at the interface are obtained. The classical models are recovered from the new predictions if interface cooling is negligible. Comparison between the new and classical predictions for the local surface evaporative flux is obtained using the literature data. Our analysis shows a significant effect of interface cooling which should be considered in predicting diffusion-driven evaporation of sessile droplets on planar surfaces.

Item ID: 73340
Item Type: Article (Research - C1)
ISSN: 1873-4405
Keywords: Coffee ring, Contact angle, Flux, Laplace equation, Toroidal coordinate
Copyright Information: © 2017 Elsevier Ltd. All rights reserved.
Funders: Australian Research Council (ARC)
Projects and Grants: ARC Linkage Projects funding scheme (project number LP0989217)
Date Deposited: 25 Aug 2022 05:36
FoR Codes: 34 CHEMICAL SCIENCES > 3406 Physical chemistry > 340603 Colloid and surface chemistry @ 100%
SEO Codes: 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280105 Expanding knowledge in the chemical sciences @ 100%
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