On the hydrothermodynamics of the icing of a wing profile in the air-crystalline flow

An experimental and theoretical complex was created to study the physical processes accompanying the interaction of the air flow carrying ice crystals with the heated surface of the streamlined body. An effective coefficient of phase transformations (evaporation and transition–through melting and solidifying in a liquid film–into barrier ice) of the mass of crystals bombarding a dry or moistened heated surface taking into account their partial entrainment with flowing air has been found. The physical and mathematical model of hydrothermodynamics of a liquid film is developed, the numerical data for the thickness, velocity, and temperature, complementing the results of the experiment, are obtained.