Characteristic Time Correlations of Pollutant Emissions from an Annular Gas Turbine Combustor

Abstract

The continuing development of a characteristic time model for gaseous pollutant emissions from conventional gas turbine engines is described. The new engine studied here is the Pratt & Whitney JT9D, and it is shown that universal correlations can be obtained by comparison with previous results. Since heterogeneous effects are found negligible for the data which were used in the present study, NO and CO emissions indices are correlated in terms of ratios of fluid mechanic and chemical kinetic times. Current limitations of the modeling approach are detailed.