Time-resolved continuous images of wrinkling flame front cross-sections were acquired by a laser-light sheet technique in an optically accessible spark ignition engine. The test engine was operated at various engine speeds and compression ratios. The fractal dimension of the curve, D2, was measured in a time series for each cycle. Analysis of the data shows that as the flame propagates the fractal dimension, D2, is close to unity a short time after spark ignition and then increases. Examination of the relationship between the growth rate of the fractal dimension, ΔD2/Δt, and D2 reveals that the higher D2 is, the lower ΔD2/Δt becomes. An Empirical equation for ΔD2/Δt was derived as a function of the ratio of the turbulence intensity to the laminar burning velocity and pressure. This model was tested in an SI engine combustion simulation, and results compared favorably with experimental data.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Fractal Dimension Growth Model for SI Engine Combustion


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    2004 SAE Fuels & Lubricants Meeting & Exhibition ; 2004



    Publication date :

    2004-06-08




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Fractal dimension growth model for spark ignition engine combustion

    Suzuki,K. / Nishiwaki,K. / Hitachi,JP et al. | Automotive engineering | 2004


    Combustion Characterizations of Ethanol/Gasoline Blended Fuel in SI Engine Using Fractal Combustion Model

    Trimbake, Santosh / Malkhede, Dileep / Devkate, Pandurang | British Library Conference Proceedings | 2017


    Combustion Characterizations of Ethanol/Gasoline Blended Fuel in SI Engine Using Fractal Combustion Model

    Malkhede, Dileep / Devkate, Pandurang / Trimbake, Santosh | SAE Technical Papers | 2017


    Fractal Dimension Growth in Flame Front Wrinkles during the Early Phase of Flame Propagation in an SI Engine

    Suzuki, K. / Nishiwaki, K. / Society of Automotive Engineers | British Library Conference Proceedings | 2003