TY - JOUR
T1 - Experimental and kinetic modeling study of extinction and ignition of methyl decanoate in laminar non-premixed flows
AU - Seshadri, Kalyanasundaram
AU - Lu, Tianfeng
AU - Herbinet, Olivier
AU - Humer, Stefan
AU - Niemann, Ulrich
AU - Pitz, William J.
AU - Seiser, Reinhard
AU - Law, Chung K.
N1 - Funding Information:
The research at the University of California at San Diego is supported by UC Discovery/Westbiofuels, Grant # GCP06-10228. The work at Princeton University was supported by the Air Force Office of Scientific Research under the technical monitoring of Dr. Julian M. Tishkoff, and a block grant awarded by BP and Ford on carbon mitigation. The work at LLNL was supported by the US Department of Energy, Office of the Freedom CAR and Vehicle Technologies, program manager Kevin Stork and Gurpreet Singh, and performed under the auspices of the US Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.
PY - 2009
Y1 - 2009
N2 - Methyl decanoate is a large methyl ester that can be used as a surrogate for biodiesel. In this experimental and computational study, the combustion of methyl decanoate was investigated in non-premixed, non-uniform flows. Experiments were performed employing the counterflow configuration with a fuel stream made up of vaporized methyl decanoate and nitrogen, and an oxidizer stream of air. The mass fraction of fuel in the fuel stream was measured as a function of the strain rate at extinction, and critical conditions of ignition were measured in terms of the temperature of the oxidizer stream as a function of the strain rate. A detailed mechanism of 8555 elementary reactions and 3036 species has been developed previously to describe combustion of methyl decanoate. Since it is not possible to use this detailed mechanism to simulate the counterflow flames because the number of species and reactions is too large to employ with current flame codes and computer resources, a skeletal mechanism was deduced from this detailed mechanism using the "directed relation graph" method. This skeletal mechanism has only 713 elementary reactions and 125 species. Critical conditions of extinction and critical conditions of ignition were calculated using this skeletal mechanism and they were found to agree well with experimental data. In general, the methyl decanoate mechanism provides a realistic kinetic tool for simulation of biodiesel fuels.
AB - Methyl decanoate is a large methyl ester that can be used as a surrogate for biodiesel. In this experimental and computational study, the combustion of methyl decanoate was investigated in non-premixed, non-uniform flows. Experiments were performed employing the counterflow configuration with a fuel stream made up of vaporized methyl decanoate and nitrogen, and an oxidizer stream of air. The mass fraction of fuel in the fuel stream was measured as a function of the strain rate at extinction, and critical conditions of ignition were measured in terms of the temperature of the oxidizer stream as a function of the strain rate. A detailed mechanism of 8555 elementary reactions and 3036 species has been developed previously to describe combustion of methyl decanoate. Since it is not possible to use this detailed mechanism to simulate the counterflow flames because the number of species and reactions is too large to employ with current flame codes and computer resources, a skeletal mechanism was deduced from this detailed mechanism using the "directed relation graph" method. This skeletal mechanism has only 713 elementary reactions and 125 species. Critical conditions of extinction and critical conditions of ignition were calculated using this skeletal mechanism and they were found to agree well with experimental data. In general, the methyl decanoate mechanism provides a realistic kinetic tool for simulation of biodiesel fuels.
KW - Biodiesel
KW - Chemical-kinetic mechanism
KW - Methyl decanoate
KW - Non premixed
KW - Surrogate
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U2 - 10.1016/j.proci.2008.06.215
DO - 10.1016/j.proci.2008.06.215
M3 - Conference article
AN - SCOPUS:67649404778
SN - 1540-7489
VL - 32 I
SP - 1067
EP - 1074
JO - Proceedings of the Combustion Institute
JF - Proceedings of the Combustion Institute
IS - 1
T2 - 32nd International Symposium on Combustion
Y2 - 3 August 2008 through 8 August 2008
ER -