Large-eddy simulations (LES) combined with the partially stirred reactor (PaSR) combustion model are employed to investigate the turbulent mixing, combustion mode, and flame stability of a sonic hydrogen jet injecting into high-enthalpy supersonic crossflow at three momentum flux ratios J , in other words, 0.71, 2.11, and 4.00, respectively. The LES accuracy in terms of the turbulent kinetic energy, power spectra density, and subgrid Damköhler number is carefully addressed against various LES resolution criteria and the experimental mean pressure distribution on the upper wall. The ignition processes with autoignition and shock compression effects are identified and analyzed. At J = 0.71 , the shock-induced ignition occurs behind the reflected shock wave, and the combustion heat release is dominated by the premixed combustion. While for the high jet-to-crossflow momentum flux ratios, for example, J = 2.11 and 4.00, ignition happens around the jet orifice due to the strong bow shock and reflected shock effects, and the combustion heat releases are dominated by the nonpremixed combustion. Furthermore, the mechanisms of flame stabilization, local extinction, and reignition in the transverse jet combustion in supersonic crossflow are further analyzed with the chemical explosive mode analysis.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Large-Eddy Simulations of Transverse Jet Mixing and Flame Stability in Supersonic Crossflow


    Contributors:
    Zhao, Majie (author) / Ye, Taohong (author) / Li, Qinling (author)

    Published in:

    AIAA Journal ; 59 , 6 ; 2126-2142


    Publication date :

    2021-04-26


    Size :

    17 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    INVESTIGATION OF SONIC JET MIXING IN A STREAM OF SUPERSONIC CROSSFLOW USING LARGE EDDY SIMULATIONS

    Rana, Z.A. / Drikakis, D. / Thornber, B.J. et al. | British Library Conference Proceedings | 2010


    Large-Eddy Simulations of Hydrogen and Ethylene Injections into a Supersonic Crossflow

    Watanabe, Junya / Kouchi, Toshinori / Takita, Kenichi et al. | AIAA | 2011



    Numerical Investigation of a Transverse Jet in a Supersonic Crossflow Using Large Eddy Simulation

    Fiorina, B. / Lele, S. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2006


    Large Eddy Simulation based Studies of Reacting and Non-reacting Transverse Jets in Supersonic Crossflow

    Kim, S. / Donde, P. / Raman, V. et al. | British Library Conference Proceedings | 2012