Structural study of non-premixed tubular hydrocarbon flames

Journal Article · Thu Jan 15 04:00:00 EST 2009 · Combustion and Flame

DOI:https://doi.org/10.1016/J.COMBUSTFLAME.2008.07.017· OSTI ID:21227374

Hu, Shengteng; Pitz, Robert W ^[1]

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1. Mechanical Engineering Department, Vanderbilt University, Nashville, TN 37235 (United States)

Tubular non-premixed flames are formed by a uniquely designed opposed tubular burner. Structural measurements of hydrocarbon flames are conducted using the laser-induced Raman scattering technique. Temperature and major species concentrations are recorded for flames produced by 30% CH{sub 4}/N{sub 2} and 15% C{sub 3}H{sub 8}/N{sub 2} burning against air. Numerical simulations of these flames with detailed chemistry show good agreement between the measured and simulated results. By comparing the numerical results of the tubular curved flames to those of the opposed-jet planar flames, it is shown that flame curvature towards the fuel stream strongly effects the temperature ({+-}80 K) of flames with low fuel Lewis number (15% H{sub 2}/N{sub 2}, Le{sub f} = 0.41). The effect of curvature on flames with high (15% C{sub 3}H{sub 8}/N{sub 2}, Le{sub f} = 1.51) and near-unity (30% CH{sub 4}/N{sub 2}, Le{sub f}{approx_equal}1) fuel Lewis numbers is much less. (author)

• OSTI ID: 21227374
• Journal Information: Combustion and Flame, Journal Name: Combustion and Flame Journal Issue: 1 Vol. 156; ISSN CBFMAO; ISSN 0010-2180
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
AIR
BURNERS
COMBUSTION KINETICS
CONFIGURATION
FLAMES
FUELS
HYDROGEN
LEWIS NUMBER
METHANE
NITROGEN
PROPANE
SIMULATION
TUBES