Accession Number : AD0784900

Title :   Low-Power Turbopropulsion Combustor Exhaust Emissions. Volume III. Analysis.

Descriptive Note : Final technical rept. 1 Apr-30 Jun 74,


Personal Author(s) : Mosier,Stanley A. ; Roberts,Richard

Report Date : JUL 1974

Pagination or Media Count : 63

Abstract : The exploratory development effort to formulate and develop a computerized theoretical model to predict emission characteristics of gas turbine combustors and to identify, evaluate, and demonstrate improved combustion design techniques for increasing combustion efficiency at part power operating conditions was expanded to include detailed computer model and experimental data analyses. The generalized combustor computer program was used to predict exhaust emission concentrations from five different gas turbine engine burners; predictions were then compared with measured data. In general, excellent agreement was achieved. In addition, a detailed comparative analysis of experimental data generated during the low-pressure and high-pressure test programs was conducted. From this analysis a phenomenological model for the premixing tube/virtual staging burner was prepared. Finally, a workhorse, variable geometry premixing burner was designed for reducing concentrations of exhaust emissions over the operating range from part to full power. (Author)

Descriptors :   *Exhaust gases, *Gas turbines, *Air pollution, Combustion, Computer programs, Mathematical models, Turbofan engines, Hydrocarbons, Reaction kinetics, Predictions, Combustion chambers, Gas analysis, Pressure, Nitrogen oxides, Test methods

Subject Categories : Jet and Gas Turbine Engines
      Air Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE