Flare Flame Phenomena.
Final rept. Jun 69-May 71,
DENVER RESEARCH INST COLO MECHANICS DIV
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A photographic technique was developed using very narrow bandpass filters to record selective emission by magnesium and sodium, thus providing a means of mapping the location of these emissions in me. The relation between the flames of stoichiometric and fuel-rich compositions was further investigated, to compare the illuminance produced by the entire flame with that of a very small central area. A basic problem proved to be the difficulty of defining the effective area of the flame in a meaningful way, because of the influence of the spectral sensitivity of the film on the apparent area. The relative size of flames of similar spectral distribution, from NaNO3Mg compositions, was studied with a special extended range film and the location of regions of maximum luminance determined at pressures of 760, 630, 150, 30 and 6 torr. No outstanding differences were observed in these spectra from different points in the flame. Author
- Combustion and Ignition