Chemiluminescent Emission Data For Kinetic Modeling Of Ethanol Combustion

Temperature measurements by oh lif and chemiluminescence kinetic modeling for ethanol flames

“…Only the simulated profile for premixed ethanol flame with F = 1.66 is not so similar to the experimental, due to the mechanism does not include reactions with higher C-species that should represent the benzene species growth and a slower global chemical reaction rate. The initial reaction mechanism built is qualitatively better than Marinov's mechanism for temperature simulations, because it was based on an ethanol kinetic model validated through chemiluminescence measurements 35 and they follow very well the heat release rates in combustion processes. This fact can be observed through sensitivity coefficients of gas temperature.…”

“…The set of reactions that describes the temperature profiles is that evolved in the chain reaction of ethanol combustion, including some chemiluminescence reactions 35 as identified by the sensitivity analysis ( Figure 2).…”

“…36 To these set of reactions, 20 ones for OH* and CH* non-radiative decays were inserted [42][43][44] although they have been discarded previously. 35,42 Two new reactions proposed for OH* formation in the recent works of Smith et al 45 and Harber and Vandsburger 46 was also considered. Thermodynamic data for electronically excited species were calculated through FITDAT program of CHEMKIN software package 38 from thermodynamic coefficients of the species in their respective ground states, adding the photon energy, hn, for each radiative transition to the enthalpy of each ground state at 298 K. For CH 2 CN radical the thermodynamic coefficients were also calculated 36 using FITDAT, but the molecular vibrational frequencies were the inputs for fitting procedure.…”

“…It was built from two models: one for ethanol combustion in a closed chamber, which was validated through chemiluminescent emissions' data 35 and other related to nitrogen chemistry for reburning process to NO reduction in a furnace. 36 To these set of reactions, 20 ones for OH* and CH* non-radiative decays were inserted [42][43][44] although they have been discarded previously.…”

“…These ethanol burning processes were simulated with PREMIX code of CHEMKIN IV software package in order to obtain the temperature profiles, which were compared to the experimental ones. A reaction mechanism based on a model validated by chemiluminescence data 35 and on a set of reactions for nitrogen chemistry 36 was tested to reproduce the temperature profiles of premixed ethanol flames in a burner. Marinov's mechanism 1 was also tested for evaluation purposes.…”