Ethanol Kinetic Model Development and Validation at Wide Ranges of Mixture Temperatures, Pressures, and Equivalence Ratios

A new detailed kinetic model of ethanol with 107 species and 1795 reactions was developed using a reaction mechanism generator and extensively validated against measured ignition delay times, laminar flame speeds, and time-resolved species concentrations. Ignition delay experiments were conducted at pressures of 15, 20, and 30 bar, a temperature range of 850–1000 K, and equivalence ratios of 0.5, 1.0, and 2.0 using an optically accessible rapid compression machine. The effect of oxygen concentration on the ignition delay at a fixed equivalence ratio was also measured and investigated using the new kinetic model. A high-speed camera was used to investigate the autoignition process and chemiluminescence emission at low-to-intermediate temperatures. Different combustion behaviors with respect to the chemiluminescence color and intensity were identified and briefly explained. The new combustion kinetic model predicted the measured data from this work and those available in the literature quite well.