Formation and consumption of NO in H{sub 2} + O{sub 2} + N{sub 2} flames doped with NO or NH{sub 3} at atmospheric pressure
- Institute of Chemical Kinetics and Combustion, Novosibirsk (Russian Federation)
- Division of Combustion Physics, Lund University, Lund (Sweden)
Flat premixed burner-stabilized H{sub 2} + O{sub 2} + N{sub 2} flames, neat or doped with 300-1000 ppm of NO or NH{sub 3}, were studied experimentally using molecular-beam mass-spectrometry and simulated numerically. Spatial profiles of temperature and concentrations of stable species, H{sub 2}, O{sub 2}, H{sub 2}O, NO, NH{sub 3}, and of H and OH radicals obtained at atmospheric pressure in lean ({phi} = 0.47), near-stoichiometric ({phi} = 1.1) and rich ({phi} = 2.0) flames are reported. Good agreement between measured and calculated structure of lean and near-stoichiometric flames was found. Significant discrepancy between simulated and measured profiles of NO concentration was observed in the rich flames. Sensitivity and reaction path analyses revealed reactions responsible for the discrepancy. Modification to the model was proposed to improve an overall agreement with the experiment. (author)
- OSTI ID:
- 21285642
- Journal Information:
- Combustion and Flame, Vol. 157, Issue 3; Other Information: Elsevier Ltd. All rights reserved; ISSN 0010-2180
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
08 HYDROGEN
NITRIC OXIDE
AMMONIA
HYDROGEN
NITROGEN
OXYGEN
DOPED MATERIALS
FLAMES
ATMOSPHERIC PRESSURE
HYDROXYL RADICALS
COMBUSTION KINETICS
WATER
BURNERS
MODIFICATIONS
SENSITIVITY ANALYSIS
MATHEMATICAL MODELS
TEMPERATURE DISTRIBUTION
COMPUTERIZED SIMULATION
TEMPERATURE RANGE 1000-4000 K
Flame structure
Molecular-beam mass spectrometry