A chemical sub-model for realistic CFD simulations of Diesel engines is developed and demonstrated by application to some test cases. The model uses a newly developed progress variable approach to incorporate a realistic treatment of chemical reactions into the description of the reactive flow. The progress variable model is based on defining variables that represent the onset and temporal development of chemical reactions before and during self ignition, as well as the stage of the actual combustion. Fundamental aspects of the model, especially its physical motivation and finding a proper progress variable, are discussed, as well as issues of practical implementation. Sample calculations of Diesel-typical combustion scenarios are presented which are based on the progress-variable model, showing the capability of the model to realistically describe the ignition-and combustion phase.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    3D-CFD Simulation of DI-Diesel Combustion Applying a Progress Variable Approach Accounting for Detailed Chemistry


    Additional title:

    Sae Technical Papers


    Contributors:
    Hofrath, C. (author) / Krüger, C. (author) / Wenzel, P. (author) / Schießl, R. (author) / Steiner, R. (author) / Maas, U. (author)

    Conference:

    Powertrain & Fluid Systems Conference and Exhibition ; 2007



    Publication date :

    2007-10-29




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    3D-CFD Simulation of DI-Diesel Combustion Applying a Progress Variable Approach Accounting for Detailed Chemistry

    Wenzel, P. / Steiner, R. / Kruger, C. et al. | British Library Conference Proceedings | 2007



    3D-simulation of DI-diesel combustion applying a progress variable approach accounting for complex chemistry

    Steiner,R. / Bauer,C. / Krueger,C. et al. | Automotive engineering | 2004


    SD-Simulation of DI-Diesel Combustion Applying a Progress Variable Approach Accounting for Complex Chemistry

    Steiner, R. / Bauer, C. / Otto, F. et al. | British Library Conference Proceedings | 2004