Numerical simulations are used here to obtain further understanding on the flashback mechanism of a technically premixed hydrogen flame operated in lean conditions. Recent work from the authors (Mira et al., 2020) showed that the hydrogen momentum strongly influences the flame dynamics and plays a fundamental role on the stability limits of the combustor. The axial injection influences the vortex breakdown position and therefore, the propensity of the burner to produce flashback. This work is an extension of our previous work where we include a detailed description of the mixing process and the influence of equivalence ratio fluctuations and heat loss on the flame dynamics.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    High-fidelity simulations of the mixing and combustion of a technically premixed hydrogen flame


    Beteiligte:
    Mira, Daniel (Autor:in) / Both, A. (Autor:in) / Lehmkuhl, O. (Autor:in) / Gomez, S. (Autor:in) / Forck, J. (Autor:in) / Tanneberger, Tom (Autor:in) / Stathopoulos, Panagiotis (Autor:in) / Paschereit, C. (Autor:in)

    Kongress:


    Erscheinungsdatum :

    2021-12-17


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    High Fidelity Simulations of a Non-Premixed Rotating Detonation Engine

    Cocks, Peter A. / Holley, Adam T. / Rankin, Brent A. | AIAA | 2016



    Unsteady Flame Embedding (UFE) Subgrid Model for Turbulent Premixed Combustion Simulations

    El-Asrag, Hossam / Nave, Jean-Christophe / Ghoniem, Ahmed | AIAA | 2010


    UNSTEADY FLAME EMBEDDING (UFE) SUBGRID MODEL FOR TURBULENT PREMIXED COMBUSTION SIMULATIONS

    El-Asrag, H. / Nave, J. / Ghoniem, A. et al. | British Library Conference Proceedings | 2010


    Investigation of Mixing Mechanisms to Enable Premixed Hydrogen Combustion

    Prater, Tate / Caulfield, Christopher / Xiao, Gan et al. | AIAA | 2023