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The content of water vapour, liquid water or ice in a dispersed form in the atmospheric air is very common and it might affect the aerodynamic characteristics, especially in the transonic or supersonic flow regime. In the paper, special attention was paid to identifying the heat transfer phenomena appearing on a transition from sub- to supersonic, and vice versa flow regime. The in-house CFD code was employed for performing the numerical analysis. The CFD calculations were carried out for the geometry of the straight channel with a bump as well as blade-to-blade channel for different boundary conditions, ratio of outlet static pressure to inlet total pressure. The numerical results showed a clear dependence of the sonic region and wetness mass fraction formation.

Selected cases of heat transfer phenomena on the shock waves in atmospheric air