Numerical study of a turbulent co-axial non-premixed flame for methanol hydrothermal combustion: Comparison of the EDC and FGM models

Eddy dissipation concept (EDC) model and flamelet generated manifolds (FGM) are developed separately to study the temperature profiles extinction limits of non-premixed hydrothermal flames. Predictions by two models evaluated comparatively experimental data in literatures. FGM shows relatively better prediction than EDC near nozzle field. Extinction temperatures can be predicted with deviations 10–33 K. The flow rates higher those model. Flow fields reaction source terms analysed identify inherent mechanism leading different results models. It is illustrated that positive effect turbulence on rate essential reason causing flame characteristics from which only has negative rate.