The spray structure under the pressurized atmosphere at a room temperature was examined by the various photographic methods. The fuel flow inside the nozzle was investigated by the transparent model nozzles. The experimental analysis of sprays yielded the spray dispersing angle, the distribution of fuel droplets inside the spray and the jet intact core length. The obtained results of those spray characteristics showed that the spray structure is divided into two spatial regimes due to their formation mechanisms. Within 10 mm from the nozzle, the spray dispersion is dominated by the turbulent states of fuel which are initiated inside the nozzle. At distance from the nozzle z > 20 - 40 mm, the spray consists of an induced gas vortex street whose length is about half of the spray width. It is proposed that the kinematic viscosity of ambient gas is a important factor which rules the process of momentum exchange form the fuel jet to the ambient gas.


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    Titel :

    Effect of Nozzle Configurations for Characteristics of Non-Reacting Diesel Fuel Spray


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Fujimoto, Hajime (Autor:in) / Senda, Jiro (Autor:in) / Yamamoto, Takehiro (Autor:in) / Dan, Tomohisa (Autor:in)

    Kongress:

    International Congress & Exposition ; 1997



    Erscheinungsdatum :

    24.02.1997




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Effect of nozzle configurations for characteristics of non-reacting diesel fuel spray

    Dan,T. / Yamamoto,T. / Senda,J. et al. | Kraftfahrwesen | 1997


    Effect of Ambient Gas Properties for Characteristics of Non-Reacting Diesel Fuel Spray

    Fujimoto, Hajime / Senda, Jiro / Takagishi, Sayo et al. | SAE Technical Papers | 1997


    Effect of ambient gas properties for characteristics of non-reacting diesel fuel spray

    Dan,T. / Takagishi,S. / Senda,J. et al. | Kraftfahrwesen | 1997


    Procedure for determining diesel nozzle spray characteristics

    Bryan, H.F. | Engineering Index Backfile | 1941