Mixing efficiency of hydrogen and air co-flow jets via wedge shock generator in dual-combustor ramjet

Flame stabilization and distribution are highly significant for fuel combustion in supersonic vehicles. In this investigation, the effects of wedge shock generator on co-flow of air and hydrogen jet are studied by the computational method. The main emphasis of this work is to disclose the structure of the fuel jet in presence of wedge shock produced in the middle of the air and fuel injector. The impacts of wedge angle and total pressure of the air and fuel jets are also investigated. RANS equations are solved with the SST turbulence model for the modeling of high compressible flow inside the combustor. Our results that produced vortices behind the splitter fluctuated more intense total pressure of air and fuel jet increases instantaneously. It is also found that a lower wedge angle is more effective than a higher one for destabilization of the flam propagation inside the combustor of the DCR engine. (C) 2021 Elsevier Masson SAS. All rights reserved.

Automated summary

The study focused on the effects of wedge shock generator on the co-flow of air and hydrogen jet. The results showed that lower wedge angle and higher total pressure of air and fuel jet led to more intense fluctuations in the total pressure and destabilization of flame propagation.