The major exhaust gas pollutants from heavy duty gas turbine engines are CO and NOx. The difficulty of predicting the concentration of these combustion products originates from their wide range of chemical time scales. In this paper, a combustion
model that includes the prediction of the carbon monoxide and nitric oxide emissions is tested. Large eddy simulations (LES)
are performed using a compressible code (OpenFOAM). A mod ified flamelet generated manifolds (FGM) approach is applied
with a thickened flame approach (ATF) to resolve the flame on the numerical grid, with a flame sensor to ensure that the flame
is only thickened in the flame region. For the prediction of the CO and NOx emissions, pollutant species transport equations
and a second, CO based, progress variable are introduced for the flame burnout zone to account for slow chemistry effects. For
the validation of the models, the Cambridge burner of Sweeney and Hochgreb [1, 2] is employed, as both carbon monoxide and
nitric oxide [3] data is available.