Both experimental and simulated ignition delay times were obtained behind reflected shock waves for the diluted stoichiometric methane/hydrogen blends with hydrogen fractions of 20%, 60%, and 80%. Test temperatures are from 1000 K to 1820 K and pressures are from 0.5 to 2.0 MPa. Results showed that increase in hydrogen fraction can promotes significantly the ignition of methane due to higher activity of hydrogen. Pressure-dependence of auto-ignition was observed in three ignition regimes (methane chemistry dominating ignition, combined chemistry of methane and hydrogen dominating ignition and hydrogen chemistry dominating ignition). Kinetic model, NUIG Mech C5_49, was used and validated against current ignition data. It was found that NUIG Mech C5_49 can give a good prediction for all test mixtures. A fuel flux analysis was performed to explain the chemical interaction between methane and hydrogen.


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    Titel :

    Experimental and Modeling Study on Auto-Ignition of Methane/Hydrogen Blends at Elevated Pressures


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Zhang, Yingjia (Autor:in)

    Kongress:

    SAE 2014 World Congress & Exhibition ; 2014



    Erscheinungsdatum :

    2014-04-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Ignition Characteristics of Methane-air Mixtures at Elevated Temperatures and Pressures

    Bihari, Bipin / Klett, Gregory M. / Ghaffarpour, Mohammad et al. | SAE Technical Papers | 2005


    Ignition characteristics of methane-air mixtures at elevated temperatures and pressures

    Gupta,S.B. / Bihari,B. / Sekar,R. et al. | Kraftfahrwesen | 2005



    IGNITION OF METHANE-HYDROGEN MIXTURES AT HIGH PRESSURES

    Adhikary, B. / Aggarwal, S. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2010