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.


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    Title :

    Tailored Fuel Injection for Performance Enhancement in a Mach 12 Scramjet Engine


    Contributors:

    Published in:

    Publication date :

    2019-01-01




    Type of media :

    Conference paper , Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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