Experimental study of chemically reacting turbulent free shear layers. (Final report, September 23, 1976-November 30, 1978. [NO + O/sub 3/. -->. NO/sub 2/ + O/sub 2/]
Measurements of species concentrations and their statistical properties at points in well-characterized chemically reacting trbulent flows are required for: (i) testing theories of reacting turbulent systems; and (ii) as input to models which predict the behavior of practical combustors. The model chemical reaction used to study turbulent mixing/reacting flows was the NO/O/sub 3/ reaction. A novel photolysis/chemiluminescence technique has been employed to measure reactant concentrations, c/sub NO/ and c/sub O/sub 3//, and a product concentration, c/sub NO/sub 2//, simultaneously at points in the flow field. From such measurements, the required statistical quantities, i.e., probability density functions and correlations of reactants and product concentrations, are obtained. These data have been supplemented by measurements of the turbulence power spectra and intensity throughout the flow. The flow studied was an axisymmetric turbulent jet exhausting into a nearly stationary, uniform channel flow. Two cases were examined: (i) a reacting case in which the jet contains dilute O/sub 3/ in N/sub 2/ and the channel flow is dilute NO in N/sub 2/; and (ii) a nonreacting (but otherwise identical flow) in which a jet of N/sub 2/ containing small quantities of NO and NO/sub 2/ exhausts into pure N/sub 2/. 22 figures, 3 tables.
- Research Organization:
- Aerochem Research Labs., Inc., Princeton, NJ (USA)
- DOE Contract Number:
- EX-76-C-01-2446
- OSTI ID:
- 5439591
- Report Number(s):
- FE-2446-8
- Country of Publication:
- United States
- Language:
- English
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Experimental study of chemically reacting turbulent free shear layers. Quarterly report, September--December 1976
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ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
NITRIC OXIDE
CHEMICAL REACTIONS
OZONE
CHEMICAL REACTION YIELD
JETS
MIXING
NITROGEN
TURBULENT FLOW
CHALCOGENIDES
CRYOGENIC FLUIDS
ELEMENTS
FLUID FLOW
FLUIDS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
YIELDS
400800* - Combustion
Pyrolysis
& High-Temperature Chemistry