Steadyhyphen;state temperature of an evaporating water droplet with a monolayer coating

摘要

A mathematical model is derived for the steadyhyphen;state temperature of an evaporating water droplet with a monolayer coating. The model uses the fluxhyphen;matching arguments of Fuchs to describe the concentration and temperature fields outside the evaporating droplet. Assuming the mean molecular speed, the gashyphen;phase diffusion coefficient, and the gas thermal conductivity to be temperature independent, a closedhyphen;form expression is derived for the steadyhyphen;state temperature of the droplet as a function of the monolayer accommodation coefficient. Comparison between model predictions and recent fluorescence thermometry experiments shows good agreement.