Prediction of NO and CO distribution in gas turbine combustors

Conference · Thu Jan 01 04:00:00 EST 1987

OSTI ID:6030180

Kajita, S; Matumoto, R

An experimental and numerical investigation was conducted to assess the validity of a prediction procedure of NO and CO formed in gas turbine combustors. A premixed gas turbine combustor burning propane was used in the experimental program, and the flow, temperature and pollutants fields were measured. The prediction procedure solves the governing conservation equations of mass, momentum, energy and chemical species simultaneously by means of finite difference solution algorithm. Two main mathematical models were employed in the procedure to represent the turbulent nature of the flow and the chemical reaction rates. For the turbulence model, the two-equation k-epsilon model was applied. The chemical reaction model assumed a two step reaction, and the effect of turbulence on reaction rates is taken into account by employing the modified eddy-break-up model which considers the dissipation rate of eddy and the concentrations of fuel and combustion products. The prediction results were compared with those obtained from the corresponding experiment. The prediction results showed the correct overall features, but a quantitative agreement was not obtained for NO and CO concentrations.

• OSTI ID: 6030180
• Report Number(s): CONF-870505-
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION MONITORING
ALKANES
CALCULATION METHODS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION KINETICS
COMBUSTION PRODUCTS
COMBUSTORS
DISTRIBUTION
EMISSION
FLOW MODELS
FLUID FLOW
GAS TURBINES
HYDROCARBONS
KINETICS
MACHINERY
MATHEMATICAL MODELS
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTANTS
PROPANE
REACTION KINETICS
SPATIAL DISTRIBUTION
TESTING
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY
TURBULENT FLOW
VALIDATION