Laser Doppler velocimeter results are presented for the mean velocity and turbulence intensity measured during combustion in a research engine. Simultaneously with each LDV measurement, the cylinder pressure and gas state (unburned or burned) were measured so that conditional sampling techniques could be used in the data-averaging procedure.Measurements of the mean velocity component in the direction of flame propagation agree well with a computer simulation of the induced velocities generated by the volume expansion of the burned gases. Mean velocities measured parallel to the flame surface are shown to be complex because a small amount of swirl was present. Conditional sampling on the time of flame arrival at the LDV probe volume revealed a thirty percent cyclic-variation bias error in the turbulence component normal to the flame. The turbulence field ahead of the flame appears to be enhanced by compression, with the component normal to the flame increased twice as much as the parallel component.


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    Titel :

    Fluid Motion during Flame Propagation in a Spark Ignition Engine


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Borgnakke, Claus (Autor:in) / Martin, Jay K. (Autor:in) / Witze, Peter O. (Autor:in)

    Kongress:

    SAE International Congress and Exposition ; 1984



    Erscheinungsdatum :

    01.02.1984




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Fluid Motion during Flame Propagation in a Spark Ignition Engine

    Witze,P.O. / Martin,J.K. / Borgnakke,C. et al. | Kraftfahrwesen | 1984


    An investigation of flame propagation in a spark ignition engine

    Petrovic,S. / Univ.of Belgrade,YU | Kraftfahrwesen | 1981


    Investigations of spatial flame propagation on a spark ignition engine

    Pischinger,F. / Spicher,U. / Tech.Hochsch.Aachen,Lehrstuhl f.Angewandte Thermodynamik | Kraftfahrwesen | 1985


    A peliminary study of flame propagation in a spark-ignition engine

    Rothrock, A. M. / Spencer, R. C. | TIBKAT | 1937


    Flame propagation into the ring crevice of a spark ignition engine

    Saika,T. / Korematsu,K. / Kogakuin Univ.,Tokyo,JP | Kraftfahrwesen | 1986