This paper reports the development of a model of diesel combustion and NO emissions, based on a modified eddy dissipation concept (EDC), and its implementation into the KIVA-3V multidimensional simulation. The EDC model allows for more realistic representation of the thin sub-grid scale reaction zone as well as the small-scale molecular mixing processes. Realistic chemical kinetic mechanisms for n-heptane combustion and NOx formation processes are fully incorporated. A model based on the normalized fuel mass fraction is implemented to transition between ignition and combustion. The modeling approach has been validated by comparison with experimental data for a range of operating conditions. Predicted cylinder pressure and heat release rates agree well with measurements. The predictions for NO concentration show a consistent trend with experiments. Overall, the results demonstrate the improved capability of the model for predictions of the combustion process.


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    Titel :

    Modeling of Diesel Combustion and NO Emissions Based on a Modified Eddy Dissipation Concept


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Assanis, Dennis N. (Autor:in) / Kurtz, Eric (Autor:in) / Pitsch, Heinz (Autor:in) / Im, Hong G. (Autor:in) / Wooldridge, Margaret S. (Autor:in) / Hong, Sangjin (Autor:in)

    Kongress:

    SAE 2004 World Congress & Exhibition ; 2004



    Erscheinungsdatum :

    08.03.2004




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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