Computer Simulations of Evaporation of Pinned Sessile Droplets: Influence of Kinetic Effects

摘要

The aim of the current work is to present results ofncomputer simulations, which show the influence of kinetic effects onnevaporation of pinned sessile water droplets of submicrometer sizenplaced on a heat conductive substrate. The computer simulation modelnalso takes into account the following phenomena: influence ofncurvature of the droplet’s surface on saturated vapor pressure aboventhe surface (Kelvin’s equation), the effect of latent heat of vaporization,nthermal Marangoni convection, and Stefan flow inside an air domainnabove the droplet. The suggested model combines both diffusive andnkinetic models of evaporation. The obtained results allow the characteristic droplet sizes to be estimated, where each of thenmentioned above phenomena becomes important or can be neglected.