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.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

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


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1997



    Publication date :

    1997-02-24




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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

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


    Procedure for determining diesel nozzle spray characteristics

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