Nonlinear buoyant-thermocapillary flows in a three-layer system with a temperature gradient along the interfaces

The nonlinear buoyant-thermocapillary flows in three superposed liquid layers bounded by two solid planes and subjected to a temperature gradient directed along the interfaces, are investigated. Two types of boundary conditions, periodic boundary conditions and heat-insulated lateral walls, are considered. The nonlinear simulations of the wavy convective regimes are performed by the finite-difference method.