Reactive force acting on a growing bubble in consequence of evaporating molecules

Analytically studied is dynamics of steam bubble separation in case of boiling. It is shown that a non-uniform vapour flow through the steam bubble surface which is accounted for by the non-uniform temperature field in liquid in case of a bubble growth on the boiling surface may result in intensive evaporation due to the reactive efficiency of the evaporated molecules. The evaporation force which far exceeds the buoyancy force and depends upon the shape of a steam bubble causes its separation