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Soot Formation at High Pressures in Laminar Liquid and Gaseous Fuel Flames

出版	University of Toronto, 2015
URL	http://books.google.com.hk/books?id=Ebv5twEACAAJ&hl=&source=gbs_api

註釋Laminar co-flow diffusion flames were studied in 1) nitrogen-diluted ethylene flames at 1:1, 1:2, and 1:4 mass ratios (C2H4: N2) at 10 atm (compared to previous results at a 1:3 ratio), and 2) liquid-doped methane flames with 7.4% of carbon from liquid fuel using ethanol and n-heptane up to 8 atm and toluene up to 6 atm. Soot spectral emission measurements were deconvoluted using Abel inversion to provide radially resolved soot volume fraction and temperature profiles. In the former, soot production was proportional to fuel concentration, and flame temperatures increased at higher dilution ratios. In the latter, toluene-doped flames produced the most soot, followed by n-heptane- and ethanol-doped flames. Soot production in ethanol-doped flames was higher than expected, and possible mechanisms for this are discussed including synergistic effects. Flame temperatures were inversely proportional to soot concentration, and the pressure dependence of soot formation is compared to previous measurements.