The nucleation and micro-explosion phenomenon of a water emulsified fuel droplet is re-examined theoretically and experimentally. The existence of micro-explosion is reaffirmed by recording the acoustic intensity during the explosion process. A theoretical model is developed to calculate the time required from nucleation to micro-explosion for a given surface heat flux.Both the theoretical and experimental results indicate that, in addition to the droplet internal superheat temperature, there exists a necessary condition for micro-explosion to occur. The necessary condition is that a minimum heat flux at the droplet surface he exceeded. This minimum surface heat flux is a function of droplet size, water fraction in parent fuel and the composition of parent fuels. The intensity of micro-explosion is greatly affected by the rate of heat transfer at droplet surface. All five fuels display a preferable range of water volume fractions for greater violent fragmentation.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A Further Look on Micro-Explosion of Water Emulsion Fuel Droplets


    Additional title:

    Sae Technical Papers


    Contributors:
    Tsao, K. C. (author) / Xu, Yong (author)

    Conference:

    1989 SAE International Off-Highway and Powerplant Congress and Exposition ; 1989



    Publication date :

    1989-09-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Micro-explosion and combustion characteristics of water-in-diesel fuel emulsion

    Sheng,H.Z. / Chen,L. / Zhang,Z.P. et al. | Automotive engineering | 1989



    Puffing and Micro-Explosion Phenomena of Water Emulsion Fuels

    Wang, C. L. / Tsao, K. C. | SAE Technical Papers | 1986


    Puffing and micro-explosion phenomena of water emulsion fuels

    Tsao,K.C. / Wang,C.L. / Univ.of Wisconsin-Milwaukee,US | Automotive engineering | 1986


    Puffing and Micro-explosion behavior of Ethanol/Jet A-1 Fuel Droplets

    Syam, S. / Chaitanya Kumar Rao, D. / Karmakar, Srinibas et al. | AIAA | 2016