Hydrodynamic interaction of an evaporating drop with a plane surface

The hydrodynamic interaction of a freely evaporating (or growing in a supersaturated solution) drop suspended in a gaseous medium with an infinitely large surface of a liquid or a solid is studied theoretically taking into account the effects linear in the Knudsen number. The results of numerical calculations of the velocity of a steady-state motion of a water drop evaporating or growing in air are considered. According to these results, the drop can move either to the wall or away from it. The direction of motion depends on the drop radius, the distance between the wall and the drop, and the thermal conductivity of the wall material.