Flow patterns in free liquid film exposed to temperature gradient

Thermocapillary-driven flow induced in a free thin liquid film under a temperature gradient parallel to the free surfaces is examined with experimental and numerical approaches. Under a small temperature gradient, a two-dimensional flow inside the film is realized in which the fluid returns in the middle region of the film. By increasing the temperature gradient, instability takes place to realize a three-dimensional flow. The authors will introduce a unique flow pattern in the presentation.