Matus Cvengros, Quentin Michalski

DOI Number XXX-YYY-ZZZ

Conference Number HiSST­2022-0433

External burning ramjet (EBR) is an interesting candidate for hypersonic airbreathing propulsion, pre­ senting a unique application of supersonic combustion without the drawbacks of scramjets such as inlet unstart and choking. This research focuses on a parametric study of three­dimensional hydrogen in­ jection in Mach 7.6 and Mach 11.4 flow and subsequent external burning in a wedge geometry using Computational Fluid Dynamics (CFD). The simulations employ detailed 13 species hydrogen­air chem­ istry model. Numerical results are compared to previous experimental study of a wedge­shaped external burning combustor. The performance of the configuration is subsequently assessed by varying the lo­ cation of the injectors along the compression surface of the wedge and the injector fuel pressure. The results suggest that in all simulated cases, the combustion throughout the expansion fan is quenched mainly by the sudden temperature and pressure drop.

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In Categories: HiSST 2022, Propulsion Systems and Components
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