| Numerical simulations of turbulent diffusion flame and soot emission have been conducted on a commercial aeroengine combustor at four operating conditions with the advanced Flamelet combustion model and PAH inception soot model. The flamelet libraries are generated based on a complex kinetic mechanism for kerosene combustion, which consists of 1015 reactions and 141 species, and for four different conditions. Kerosene is assumed to be a mixture of 80% n-decane and 20% toluene by volume. Predicted temperature radial profiles are compared to the high-pressure combustion rig data with good agreement obtained. Soot emissions are predicted with a two-parameter model in a post-processing mode. The results are compared with the smoke densities converted from the measured smoke numbers. The current soot model with a constraint on the oxidation rate over-predicts the smoke density by one order of magnitude higher than the measurements. However, convergence difficulties prevent a full implementation of soot oxidation. |
