Computer Simulations of Quasi-Steady Evaporation of Sessile Liquid Droplets

摘要

Instantaneous distribution of mass and thermal fluxes inside and outside of an evaporating sessile droplet is considered using computer simulations. The latter distribution is calculated in a self consistent way by considering an interconnected problem of vapour transfer in the vapour phase outside the droplet; heat transfer in vapour, liquid and solid substrate; and Marangoni convection inside the liquid droplet. The influence of thermal conductivity of the solid support on the evaporation process is evaluated. The deduced dependences of instantaneous fluxes can be applied for self-consistent calculations of time evolution of the evaporation processes of sessile droplets.