Analysis of high pressure premixed flames using Equivalent Reactor Networks for predicting NOx emissions

► Lean premixed high pressure methane-air flames, using CFD together with a reactor network approach are studied. ► The reacting flow field is divided into separate zones in which homogeneity of the physical and chemical conditions prevails. ► The defined zones are interconnected forming an Equivalent Reactor Network (ERN). ► Three flames are examined for which experimental data is available. ► Computations are performed for a range of operating conditions, quantifying the effect in the emitted NOx levels.