par Savva, Nikos 
;Rednikov, Alexei ;Colinet, Pierre
Référence (7-10 September 2014: London), Proc. of 4th Micro and Nano Flows Conference UCL
Publication Publié, 2014
;Rednikov, Alexei ;Colinet, Pierre Référence (7-10 September 2014: London), Proc. of 4th Micro and Nano Flows Conference UCL
Publication Publié, 2014
Publication dans des actes
| Résumé : | We consider the evaporation dynamics of a two-dimensional, partially-wetting sessile droplet of avolatile liquid in its pure vapour, which is supported on a smooth horizontal superheated substrate. Assumingthat the liquid properties remain unchanged, we utilise a one-sided lubrication-type model for the evolution ofthe droplet thickness, which accounts for the effects of evaporation, capillarity, slip and the kinetic resistanceto evaporation. We follow an asymptotic approach, which yields a set of coupled evolution equations forthe droplet radius and area, estimating analytically the evaporation-modified apparent angle when evaporationeffects are weak. The validity of our matching procedure is verified by numerical experiments, obtaining alsoan estimate for the evaporation time. |
