Evaluating characteristic time emissions predictions for three vehicular gas turbine combustors

Journal Article · Sat Jan 01 00:00:00 EST 1977 · J. Energy; (United States)

DOI:https://doi.org/10.2514/3.47941· OSTI ID:5223525

Hammond, Jr, D C

The standard GT-309 combustor and two modified versions were tested in a flow-rig over the range of steady-state conditions simulating combustor operation in a GT-309 regenerative gas turbine engine. Based on measured emissions of the standard combustor, a characteristic time model developed by Mellor was used to predict the carbon monoxide, total oxides of nitrogen, and total hydrocarbons emissions for the two modified combustors. The total oxides of nitrogen emissions were predicted to within one standard deviation for all conditions. The carbon monoxide emissions were not usually predicted within one standard deviation, and the predicted and experimental trends were conflicting. The predicted total hydrocarbons emissions suffered the same inaccuracy. However, the modified combustors did exhibit reduced emissions. The strong dependence of carbon monoxide emissions from the standard combustor on atomizing-air pressure drop at low engine-power conditions was successfully correlated by the model as a shift in quenching location. The oxides of nitrogen emissions for the standard combustor at high power conditions were not accurately correlated by the model because the quenching of nitric oxide formation was not completed within the combustor. 16 figures.

• Research Organization: General Motors Corp., Warren, MI
• OSTI ID: 5223525
• Journal Information: J. Energy; (United States), Vol. 1:4
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
EXHAUST GASES
GAS TURBINES
CARBON MONOXIDE
CHEMICAL COMPOSITION
COMBUSTORS
HYDROCARBONS
NITROGEN OXIDES
QUANTITY RATIO
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
GASEOUS WASTES
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION
TURBINES
TURBOMACHINERY
WASTES
330700* - Advanced Propulsion Systems- Emission Control
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)