With the difficulty and cost of full-scale flight experiments, the design of scramjet engines relies heavily on computational simulations. Radiation may play an important role in the wall heating and flow cooling of scramjets. However, very few studies have focused on such. The present analysis is based on three-dimensional turbulent reacting flow simulations of the HyShot II hydrogen fueled scramjet engine running at flight conditions of Mach 7.4. A three-dimensional discrete ordinates method analysis with a narrowband averaged spectral model is employed to determine wall heating and flow cooling from thermal radiation. The discrete ordinates method is verified against a three-dimensional ray tracing method. The radiative species considered are H 2 O and OH. The radiative heat flux is on the order of 10 kW / m 2 , which is 0.1–0.6% of the total convective wall heat flux. Flow cooling due to radiation is found to be on the order of 3 K. Sensitivity analysis shows that radiation is highly dependent on chamber size, temperature, pressure, and radiative species mole fraction. Variations in these factors can explain the differences between previous analyses in the literature that studied hypothetical engines and the current work that models an existing scramjet.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Radiation Modeling of a Hydrogen Fueled Scramjet


    Contributors:

    Published in:

    Publication date :

    2013-01-01




    Type of media :

    Conference paper , Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Radiation Modeling of a Hydrogen-Fueled Scramjet

    Crow, Andrew / Boyd, Iain / Terrapon, Vincent | AIAA | 2011


    Gasdynamics of hydrogen-fueled scramjet combustors

    SABEL'NIKOV, V. / VOLOSHENKO, O. / OSTRAS, V. et al. | AIAA | 1993


    Active cooling of a hydrogen-fueled scramjet engine

    PAGEL, L. / WARMBOLD, W. | AIAA | 1968


    Active cooling of a hydrogen-fueled scramjet engine.

    PAGEL, L. L. / WARMBOLD, W. R. | AIAA | 1969


    Hydrocarbon-fueled scramjet combustor investigation

    KAY, I. / PESCHKE, W. / GUILE, R. | AIAA | 1990