The numerical investigation of macroscopic regularities of heat and mass transfer processes under conditions of evaporation and boiling in the coordination of a thin film of liquid condensed substance (typical liquid fuel) with the metal substrate heated up to high temperatures was conducted. Conditions which are sufficient for inflammation of liquid film were established. Limited values of substrate temperature and film thickness of liquid condensed substance, when the ignition does not take place, were determined.

heat and mass transfer, evaporation, boiling, liquid condensed substance, film, heated substrate, ignition.