Abstract
Experimental results are presented for turbulent diffusion flames of a round jet of propane in a coflowing midly swirled, S =0.3, stream of air. The jet diameter was 8.7 mm and the total flow was confined in a 58 mm diameter combustion tunnel. Buoyancy effects were found to be negligible. Measurements were made at air stream to fuel stream velocity ratios of 45, 61, and 75 to 1 for initial reactant temperatures of 300°, 440°, and 550°K. Measurements include the spatial distribution of nitric oxide, nitrogen dioxide, and temperature as well as the major stable species: propane, nitrogen, oxygen, water vapor, carbon dioxide, and carbon monoxide. Substantial concentrations of nitrogen dioxide were measured and nitrogen dioxide appears to peak slightly on the fuel rich side of the nitric oxide maxima. No completely satisfactory explanation for the existence and peaking behavior of the nitrogen dioxide was found. Nitrogen dioxide formation mechanisms are examined and discussed. It appears that the formation of nitrogen dioxide occurs through the rapid oxidation of nitric oxide by radicals found in superequilibrium concentrations.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
