Photochemical Marangoni Convection

Marangoni convection caused by a photochemical reaction is studied. Two cases are considered: convection in a thin liquid film and in a deep liquid layer. In the first case a system of strongly nonlinear evolution equations is derived and solved numerically. It is shown that Marangoni flow caused by a photochemical reaction can result in either film dry-out or sustained wavy patterns. In the case of a deep layer the conditions for Marangoni instability to occur are found and their dependence on the reaction kinetic parameters is analyzed.