On the base of the three-dimensional CFD simulation a simple reactor model to predict the pollutantformation in a combustor operating in a diffusion mode was built. This reactor model has been validatedagainst Nox emission measured for model aero-engine combustor using both methane and kerosene as afuel. It was shown that the predicted Nox emission index strongly depends on the applied reaction mechanism.The Nox emission indices calculated for methane-fueled and kerosene-fueled combustor using thedeveloped reactor model and extended detailed reaction mechanisms for CH4/air and C10H22/air mixturesare consistent well with the experimental data. The developed model was used to estimate the emission ofdifferent species involving sulfur compounds (SO2 and SO3), carbon oxide, and unburned hydrocarbonsdepending on power setting of gas-turbine aviation engine.
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