Multi-dimensional numerical simulation of the combustion process in spark ignition engines were performed using the Coherent Flame Model (CFM) which is based on the flamelet assumption. The CFM uses a balance equation for the flame surface area to simulate flame surface advection, diffusion, production and destruction in a turbulent reacting flow. There are two model constants in CFM, one associated with the modeling of flame surface production and the other with the modeling of flame surface destruction. Previous experimental results on two test engines charged with propane-air mixtures were used to compare with the computations for different engine speeds, loads, equivalence ratios and spark plug locations. Predicted engine cylinder pressure histories agree well with the experimental results for various operating conditions after the model constants were calibrated against a reference operating condition. It was found that only the production term constant must be calibrated for each engine. However, when the ignition site is moved away from the center of the combustion chamber, predicted burning rates are too fast for the higher engine speed cases. Contour plots of gas temperature and density show that the Coherent Flame Model predicts a highly convoluted flame surface in the combustion chamber. These contour plots were also used to aid understanding of the difficulties encountered in the side wall ignition cases.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Three-Dimensional Numerical Simulation of Flame Propagation in Spark Ignition Engines


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Fuels & Lubricants Meeting & Exposition ; 1993



    Publication date :

    1993-10-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Three-dimensional numerical simulation of flame propagation in spark ignition engines

    Zhao,X. / Matthews,R.D. / Ellzey,J.L. et al. | Automotive engineering | 1993



    Numerical Evaluation of Squish Induced Flame Propagation in Spark-Ignition Engines

    Thumthae, C. / Korean Society of Automotive Engineers | British Library Conference Proceedings | 2005


    Flame kernel formation and propagation modelling in spark ignition engines

    Song, Jeonghoon. / Sunwoo, Myoungho. | SAGE Publications | 2001


    Flame Reconstruction in Spark Ignition Engines

    Johansson, Bengt / Lindgren, Finn / Holst, Jan | SAE Technical Papers | 1997