Study of gas and particle flow through a mask with round aperture during cold spraying

The paper presents the results of simulation and experiment for motion of a supersonic two-phase jet passing through a round aperture in a mask. The mask is placed at different distances from the substrate under the conditions of the cold spraying. The calculations were performed using the fluid dynamics software ANSYS Fluent; flow visualization is achieved using the Schlieren method. Solution analysis and comparison of results were performed for example of aluminum powder spraying.