Rivulet interaction on surfaces of heated liquid films

Study of the water film flow along the vertical heater at Reynolds number $\mathrm{Re}=33$ and initial temperature $T_0=23^\circ$C was carried out. Some types of interaction between rivulets on the surface of a heated liquid film were distinguished. It is shown that thermocapillary structures appearance in the heater upper part leads to rivulets deflection and interaction.