Modeling the effect of wave structures arising during the deformation of the channel wall on the supersonic flow with heat supply

The work investigated the effect of the channel wall deformation on the flow gas dynamics in the presence of combustion. Visualization of the flow structure and multispectral survey were carried out. It is shown that the occurrence of oblique shock waves from the curvature of the surface of the upper wall can lead to two different results: to deflect the flow towards the center with an increase in the separation zone, or to reduce the separation zones and keep the velocity distribution at the outlet close to the initial one. From the results of the multispectral survey, it follows that, in all cases, combustion occurs in the separation zone. The heat supply organization from the hydrogen combustion in the separation zone led to different results, depending on the flow configuration in the combustion chamber without combustion. The products of hydrogen combustion prevented the free propagation of the cold flow, which was confirmed by measurements of the total pressure at the outlet from the model combustion chamber. Thus, the data obtained indicate that the deformation of the combustion chamber wall can lead not only to a change in the initial flow but also to influence the result of heat supply from combustion in the separation zone.