EVAPORATION KINETICS OF LIQUID DROPLETS AND DROPLET ASSEMBLAGES IN AIR.

Theories on the evaporation kinetics of liquid droplets and assemblages of droplets were reviewed. The diffusion - controlled evaporation of single droplets was treated under stationary, quasi - stationary, and non - stationary conditions. The extent of the influence on the evaporation rate caused by ventilation, heat transfer, radiation, impurities, and monolayers, was estimated. A general time rate equation for single drop evaporation was proposed. This general equation is based on both the diffusion and the kinetic theories it remains valid for the entire range of droplet radius and ambient pressure. Further extension of this equation is planned to include the monolayer and impurity effects and to correlate the chemical bonding in liquids to their rate of evaporation. A realistic model for cloud evaporation was proposed. This quasi - dynamic model was shown to be more flexible than any static model since it accounts for the dynamic behavior of clouds and sprays in free atmosphere. Author