Three-dimensional interaction of a supersonic gas-droplet jet and obstacles with regard for phase transitions

The inleakage of a non-single-phase non-single-component jet consisting of a passive gas, evaporating droplets, and vapor on solid surfaces is investigated. In the physical model of the jet, the diffusion mechanism of interphase mass transfer is assumed, along with the presence of the velocity and thermal nonequilibrium between droplets and the carrier binary mixture of gases. This relaxing two-phase medium is treated as locally monodispersed, with the droplet integrity being defined by the Weber number. The droplets colliding with the surface break down into small fragments which vaporize instantaneously to produce the injection of the vapor mass equal to the mass of incident droplets into the flux. The numerical investigations are performed in the region of determined parameters corresponding to the steady-state regime of inleakage of a jet with a dispersed annular screen onto flat and concave cylindrical obstacles at different angles.