Diesel combustion model for CFD simulation is established taking account of an auto-ignition process of non-homogeneous mixture. Authors revealed in their previous paper that the non-homogeneity of fuel-air mixture affected more on auto-ignition process such as its ignition delay or combustion duration than the turbulent mixing rate. Based on these results, novel diesel combustion model is proposed in this study. The transport calculation for local variation of fuel-air PDF is introduced and the chemical reaction rate is provided by the local non-homogeneity. Furthermore, this model is applied the RANS based CFD simulation of the spray combustion in a Diesel engine condition. The results show that the combustion process is well described for several engine operations.


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    Titel :

    Diesel Combustion Model with Auto-ignition Process of Non-homogeneous Mixture


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Kawanabe, Hiroshi (Autor:in) / Yamamoto, Ryo (Autor:in) / Ishiyama, Takuji (Autor:in)

    Kongress:

    Powertrains, Fuels and Lubricants Meeting ; 2009



    Erscheinungsdatum :

    15.06.2009




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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    Numerical Analysis of Auto-ignition Process in a Non-homogeneous Mixture

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