Computation of high pressure Diesel injection requires improvement of present spray atomization and droplet breakup models. The surface wave instability atomization (Wave) model of Reitz [2] has been coupled to a new breakup model (FIPA) which is based on the experimental correlations of Pilch et al.[3]. It has been integrated in the 3D KMB code [1] derived from the Kiva 2 code [4] of Los Alamos already including a stochastic Lagrangian description of sprays. The droplet breakup FIPA model was first fitted and validated using the monodisperse drop breakup experiments of Liu and Reitz [5]. The response of the modified spray model including the global Wave-FIPA breakup model is compared to well characterized data obtained in a high pressure and temperature vessel. This vessel is fitted with a common-rail injection system with a single hole injector tip. Conditions simulating a direct injection diesel engine are obtained (ρg = 25kg/m3, Pg = 3 MPa and 6.1 MPa, Tg = 400K and 800K, Pinj from 40 to 150 MPa). Liquid and vapor penetrations in the vessel are well reproduced, even for high injection pressure cases and with or without evaporation.


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    Titel :

    Modeling Atomization and Break Up in High-Pressure Diesel Sprays


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Habchi, C. (Autor:in) / Huynh Huu, C. (Autor:in) / Verhoeven, D. (Autor:in) / Vanhemelryck, J. L. (Autor:in) / Lambert, L. (Autor:in) / Baritaud, T. (Autor:in)

    Kongress:

    SAE International Congress and Exposition ; 1997



    Erscheinungsdatum :

    24.02.1997




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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