This paper describes a model used for the prediction of the formation of nitrogen oxides in modifications of an industrial diffusion flame, natural gas fueled can combustor. The flowfield inside the modified combustors is calculated using a Navier-Stokes solver. A fast chemistry assumption is used for modeling the heat release. Calculated turbulence parameters are then used for the calculation of the formation rate in the post-processing mode with the aid of a flamelet model. The flamelet model permits the use of detailed kinetics with only minimal computational expense. The dependence of the formation rate on the mixture fraction and scalar dissipation is calculated separately for each given condition. The validation of the model predictions is based on field test data taken earlier on several low modifications recently applied to an industrial, reverse flow can type combustor. The reduced level of emissions was achieved in these modifications by changes in the air distribution within the combustor liner. A comparison of the predicted and measured emission levels shows good potential of the flamelet model.
Flamelet Model of in a Diffusion Flame Combustor
Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Paper presented at the International Gas Turbine and Aeroengine Congress and Exhibition, Munich, Germany, May 8–11, 2000; Paper 00-GT-099. Manuscript received by IGTI Oct. 1999; final revision received by ASME Headquarters Oct. 2000. Associate Editor: D. Wisler.
Volkov , D. V., Belokin , A. A., Lyubimov , D. A., Zakharov, V. M., and Opdyke, , G., Jr. (October 1, 2000). "Flamelet Model of in a Diffusion Flame Combustor ." ASME. J. Eng. Gas Turbines Power. October 2001; 123(4): 774–778. https://doi.org/10.1115/1.1374438
Download citation file: