Evaporation of water droplets and nucleation at the interface
N.E. Shishkin
Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Keywords: evaporation rate, heat and mass transfer, nucleation of vapor bubbles
Abstract
The influence of the size of water droplets, temperature, and velocity of a streamlining jet of dry air on the rate of evaporation is considered. Due to the systematic studies using a thermal imager, it is shown that the interface temperature changes spontaneously. It is assumed that the temperature nonuniformity on the surface is caused by the release of vapor nanobubbles and can be characterized by the velocity of their outflow. Empirical regularities on the intensity of bubble release from a droplet are obtained both as a function of time and diameter, and in the criterion form.
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