LASER-BASED INVESTIGATION OF SOOT FORMATION IN LAMINAR PREMIXED FLAMES AT ATMOSPHERIC AND ELEVATED PRESSURES

An experimental investigation into soot formation in laminar premixed flames at atmospheric and elevated pressures (1-5 bar) has been conducted. The flames were produced in a dual-flame burner enclosed in a pressure housing. Quantitative soot volume fraction measurements were obtained using laser-in...

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Bibliographic Details
Published in:Combustion science and technology 2005-10, Vol.177 (10), p.1835-1862
Main Authors: TSURIKOV, M. S., GEIGLE, K. P., KRÜGER, V., SCHNEIDER-KÜHNLE, Y., STRICKER, W., LÜCKERATH, R., HADEF, R., AIGNER, M.
Format: Article
Language:English
Subjects:
Applied sciences
CARS
Combustion of gaseous fuels
Combustion of liquid fuels
Combustion. Flame
elevated pressure
Energy
Energy. Thermal use of fuels
Exact sciences and technology
LII
premixed flame
soot volume fraction
temperature
Theoretical studies. Data and constants. Metering
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Summary:An experimental investigation into soot formation in laminar premixed flames at atmospheric and elevated pressures (1-5 bar) has been conducted. The flames were produced in a dual-flame burner enclosed in a pressure housing. Quantitative soot volume fraction measurements were obtained using laser-induced incandescence coupled with a quasi-simultaneous absorption measurement for calibration; the data were corrected for signal trapping using an "onion peeling" algorithm. Temperature measurements were obtained using shifted vibrational coherent anti-Stokes Raman scattering, which yields well-resolved, accurate temperature measurements in sooting and nonsooting environments. Results are presented for stable homogeneous flames using air as oxidizer and ethylene, propylene, and toluene as fuels. The variation of soot volume fraction and temperature with height above burner and as a function of fuel, equivalence ratio, and pressure are presented and discussed. The present soot data are well represented by a first-order growth rate law. The data identify trends and features useful for the validation of numerical models of soot formation.
ISSN:0010-2202
1563-521X
DOI:10.1080/00102200590970212