According to the Lefebvre's model and flame volume (FV) concept, an FV model about lean blow-out (LBO) was proposed by authors in early study. On the other hand, due to the model parameter (FV) contained in FV model is obtained based on the experimental data, FV model could only be used in LBO analysis instead of prediction. In view of this, a hybrid FV model is proposed that combines the FV model with numerical simulation in the present study. The model parameters contained in the FV model are all estimated from the simulated nonreacting flows. Comparing with the experimental data for 11 combustors, the maximum and average uncertainties of hybrid FV model are [+ or -] 16% and [+ or -] 10%. [DOI: 10.1115/1.4028394]


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    Title :

    A Hybrid Semi-empirical Model for Lean Blow-out Limit Predictions of Aero-engine Combustors


    Contributors:


    Publication date :

    2014




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    52.52 Thermische Energieerzeugung, Wärmetechnik / 52.30 Strömungskraftmaschinen, Turbomaschinen / 52.52 / 52.30




    A Hybrid Model for Calculating Lean Blow-outs in Practical Combustors

    Sturgess, G. J. / Shouse, D. T. / American Institute of Aeronautics and Astronautics et al. | British Library Conference Proceedings | 1996