In this work, large eddy simulation (LES) with a K-equation subgrid turbulent kinetic energy model is implemented into the CFD code KIVA3V to study the features of liquid fuel spray and combustion using gradually varying grid in a constant volume chamber. The characteristic time-scale combustion model (CTC) incorporating a turbulent timescale is adopted to predict the combustion process and the SHELL auto-ignition model is used to predict auto-ignition. Combustion is also simulated using Parallel Detailed Chemistry with Lu's n-heptane reduced mechanism (58 species), which has been added into the KIVA3V-LES code. The computational results are compared with Sandia experimental data for non-reacting and reacting cases. As a result, LES can capture the complex structure of the spray and temperature distribution as well as the trend of ignition delay and flame lift-off length variations. Better results are obtained using the Parallel Detailed Chemistry than the CTC model.


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    Titel :

    Large Eddy Simulation of Liquid Fuel Spray and Combustion with Gradually Varying Grid


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Luo, Kai Hong (Autor:in) / Zhou, Lei (Autor:in) / Jia, Ming (Autor:in) / Shuai, Shi Jin (Autor:in)

    Kongress:

    SAE/KSAE 2013 International Powertrains, Fuels & Lubricants Meeting ; 2013



    Erscheinungsdatum :

    2013-10-14




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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