TY - GEN
T1 - Flame propagation and counterflow nonpremixed ignition of mixtures of methane and ethylene
AU - Liu, W.
AU - Kelley, A. P.
AU - Law, C. K.
N1 - Funding Information:
This research was supported by the US Army Research Office and the US Air Force Office of Scientific Research under the technical monitoring of Dr. Ralph A. Anthenien and Dr. Julian M. Tishkoff, respectively. The participation of Dr. Yun Huang with the experimental aspects of the investigation is very much appreciated.
PY - 2009
Y1 - 2009
N2 - The ignition temperature of nitrogen-diluted mixtures of methane and ethylene counterflowing against heated air was measured up to 5 atmospheres. In addition, the stretch-corrected laminar flame speeds of mixtures of air, methane and ethylene were determined from the outwardly propagating spherical flame of up to 10 atmospheres, for extensive range of the lean-to-rich equivalence ratio. These experimental data, relevant to low-temperature ignition chemistry and high-temperature flame chemistry, respectively, were subsequently compared with calculations using two detailed kinetic mechanisms. Furthermore, the hierarchical structure of the associated oxidation kinetics was examined by comparing the sizes and constituents of the skeletal mechanisms of the pure fuels and their mixtures, derived using the method of directed relation graph (DRG). The skeletal mechanism was further reduced by the time-scale analysis and a 24- species reduced mechanism was obtained from the detailed mechanism of USC Mech II, valid within the parameter space of the conducted experiments.
AB - The ignition temperature of nitrogen-diluted mixtures of methane and ethylene counterflowing against heated air was measured up to 5 atmospheres. In addition, the stretch-corrected laminar flame speeds of mixtures of air, methane and ethylene were determined from the outwardly propagating spherical flame of up to 10 atmospheres, for extensive range of the lean-to-rich equivalence ratio. These experimental data, relevant to low-temperature ignition chemistry and high-temperature flame chemistry, respectively, were subsequently compared with calculations using two detailed kinetic mechanisms. Furthermore, the hierarchical structure of the associated oxidation kinetics was examined by comparing the sizes and constituents of the skeletal mechanisms of the pure fuels and their mixtures, derived using the method of directed relation graph (DRG). The skeletal mechanism was further reduced by the time-scale analysis and a 24- species reduced mechanism was obtained from the detailed mechanism of USC Mech II, valid within the parameter space of the conducted experiments.
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M3 - Conference contribution
AN - SCOPUS:84946573179
T3 - Fall Meeting of the Eastern States Section of the Combustion Institute 2009
SP - 293
EP - 300
BT - Fall Meeting of the Eastern States Section of the Combustion Institute 2009
PB - Combustion Institute
T2 - Fall Meeting of the Eastern States Section of the Combustion Institute 2009
Y2 - 18 October 2009 through 21 October 2009
ER -