Validation study of the model to predict heating and vaporization of a liquid droplet

Simulation of physical processes

Validation study is presented of the model that predicts droplet heating and evaporation with the internal temperature gradient and liquid recirculation taken into account. Two evaporating liquids having significantly different evaporation rates (acetone and water) and the range of parameters characterizing ambient atmosphere (temperature, humidity, flow velocity) are considered. Reasonable agreement of measured and predicted droplet temperatures, diameters, sedimentation velocities has been obtained. For water, such an agreement has been demonstrated both for large (1 to 3 mm) and small (0.04 to 0.06 mm) droplets.