Experimental study of the evolution of solitary three-dimensional waves on the surface of a heated liquid film

Results of an experimental investigation of the features of evolution of a solitary three-dimensional (3D) wave on the surface of a vertically falling liquid film heated by a constant heat flux are presented. It is established that the wave weakly influences the film surface temperature. The interaction of a 3D wave with thermocapillary rivulet structures on the falling film surface results in that the wave is pulled toward the center of a rivulet.