An advanced gas dynamic/chemistry interaction code, SPRINT2D, has been developed to simulate end gas autoignition and knock. This confirms that an earlier hypothesis of three distinct modes of autoignition was not an artefact of the previous numerical code. A comprehensive chemical kinetic scheme has predicted autoignition onset and demonstrated a mechanism for creating the end gas temperature gradients assumed in, as well as generated heat release rates for use in, SPRINT2D.Using the combined modelling techniques, good matches between theoretical and experimental autoignition centre growth (at up to 750,000 frames/second), particle tracking and pressure development sequence at multiple transducer sites have been obtained for “thermal explosion” and “developing detonation” autoignition events.


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    Title :

    End Gas Inhomogeneity, Autoignition and Knock


    Additional title:

    Sae Technical Papers


    Contributors:
    Tindall, A. (author) / Sheppard, C. G. W. (author) / Pan, J. (author) / Ware, J. M. (author) / Berzins, M. (author) / Pennington, S. V. (author)

    Conference:

    International Fall Fuels and Lubricants Meeting and Exposition ; 1998



    Publication date :

    1998-10-19




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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