Chen, J
1994
Prediction of NOx Production in a Turbulent Hydrogen-Air Jet Flame
Menon, S.; McMurtry, P.A.; Kerstein, A.R. and Chen, J.
AIAA Journal of Propulsion and Power, 10:161-168, 1994. Funded by ACERC, NASA and US Department of Energy.
A major concern in the numerical study of turbulent nonpremixed flames is the accurate prediction of trace species. The production of pollutants such as NOx during unsteady combustion needs to be understood and predicted accurately so that the design of the next generation's combustion systems can meet the forthcoming stricter environmental restrictions. Numerical studies using steady-state methods cannot account for the unsteady phenomena in the mixing region, and therefore, fail to accurately predict the NOx production that could occur. A novel unsteady mixing model is demonstrated here that accounts for all the length scales associated with mixing and molecular diffusion processes. Finite-rate kinetics in the form of a reduced mechanism have been used to study hydrogen-air nonpremixed jet flames. NOx production in these jet flames was also predicted. Comparisons with experimental data and PDF calculations show good agreement, thereby, providing validation of the mixing model.
Chen, J
1994
Prediction of NOx Production in a Turbulent Hydrogen-Air Jet Flame
Menon, S.; McMurtry, P.A.; Kerstein, A.R. and Chen, J.
AIAA Journal of Propulsion and Power, 10:161-168, 1994. Funded by ACERC, NASA and US Department of Energy.
A major concern in the numerical study of turbulent nonpremixed flames is the accurate prediction of trace species. The production of pollutants such as NOx during unsteady combustion needs to be understood and predicted accurately so that the design of the next generation's combustion systems can meet the forthcoming stricter environmental restrictions. Numerical studies using steady-state methods cannot account for the unsteady phenomena in the mixing region, and therefore, fail to accurately predict the NOx production that could occur. A novel unsteady mixing model is demonstrated here that accounts for all the length scales associated with mixing and molecular diffusion processes. Finite-rate kinetics in the form of a reduced mechanism have been used to study hydrogen-air nonpremixed jet flames. NOx production in these jet flames was also predicted. Comparisons with experimental data and PDF calculations show good agreement, thereby, providing validation of the mixing model.