Study on mixing and combustion of kerosene fuel in ramjet mode of RBCC engine

In order to investigate the mixing and combustion in ramjet mode of RBCC engine, some cases were simulated. Chamber pressure, mixing reaction efficiency, total pressure loss etc were compared to study the change of combustion under different cases. The simulation shows that the fuel and airflow are previously heated effectively by rocket flame, which increases the atomization and spray evaporation effect. The pylon enhances the mixing capability of kerosene, and the cavities improve the kerosene residence time in the chamber, the function of pylon and cavities realize the combustion stabilization and effective combustion of liquid fuel. In addition, the dual cavities can also improve the mixing and combustion. Furthermore, the study shows the position between cavities and pylons can improve the mixing reaction efficiency and combustion performance.