Evaporation of a thin film: diffusion of the vapour and Marangoni instabilities
Evaporation of a thin film: diffusion of the vapour and Marangoni instabilities
The stability of an evaporating thin liquid film on a solid substrate is investigated within lubrication theory. The heat flux due to evaporation induces thermal gradients; the generated Marangoni stresses are accounted for. Assuming the gas phase at rest, the dynamics of the vapour reduces to diffusion. The boundary condition …