To investigate the potential performance benefits of tailored fuel injection in a scramjet engine, flow through a rectangular-to-elliptical shape-transitioning scramjet was simulated with two different combustor injection geometries: one with uniform film injection, and the other with oblique-angle cross-flow porthole injectors targeting the flow structures observed in engine simulations. Both engines used inlet injection to promote rapid ignition and burning of the combustor-injected fuel. The simulations were compared with experimental data for validation purposes. The tailored-injection engine fuelled to an equivalence ratio of 1.24 realized higher performance than the film-injection configuration, achieving oxygen-based mixing and combustion efficiencies of 98.9% and 84.9%, respectively. Tailored injection shows promise as a method for improving scramjet performance, allowing higher fuel efficiency with simplified fuel injection, and potentially shorter combustor sections.
Tailored Fuel Injection for Performance Enhancement in a Mach 12 Scramjet Engine
Journal of Propulsion and Power ; 35 , 1 ; 72-86
01.01.2019
Aufsatz (Konferenz) , Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Tailored Fuel Injection for Performance Enhancement in a Mach 12 Scramjet Engine (AIAA 2015-3614)
British Library Conference Proceedings | 2015
|Mach 8 testing of scramjet engine models
AIAA | 1999
|