The lifetimes of evaporating sessile droplets are significantly extended by strong thermal effects

Schofield, F. G. H. and Wilson, S. K. and Pritchard, D. and Sefiane, K. (2018) The lifetimes of evaporating sessile droplets are significantly extended by strong thermal effects. Journal of Fluid Mechanics, 851. pp. 231-244. ISSN 0022-1120

[img]
Preview
Text (Schofield-etal-JFM-2018-The-lifetimes-of-evaporating-sessile-droplets-are-significantly-extended)
Schofield_etal_JFM_2018_The_lifetimes_of_evaporating_sessile_droplets_are_significantly_extended.pdf
Final Published Version
License: Creative Commons Attribution 4.0 logo

Download (465kB)| Preview

    Abstract

    The evaporation of sessile droplets is analysed when the influence of the thermal properties of the system is strong. We obtain asymptotic solutions for the evolution, and hence explicit expressions for the lifetimes, of droplets when the substrate has a high thermal resistance relative to the droplet and when the saturation concentration of the vapour depends strongly on temperature. In both situations we find that the lifetimes of the droplets are significantly extended relative to those when thermal effects are weak.