Measurements and modeling of light hydrocarbons in rich C 2H 4 combustion in a jet-stirred reactor

Abstract

Premixed fuel and air were burned at atmospheric pressure and 1750 K in a jet-stirred combustor. A water-cooled stainless-steel probe was used to sample stable species over an equivalence ratio range of 1.3–2.0. In general, the major stable species measured showed good agreement with a model consisting of a single well-stirred reactor and a reaction mechanism proposed by Glarborg, Miller, and Kee. Radical reactions occurring in the sampling probe were also modeled using a measured probe temperature profile. At low equivalence ratios (1.3–1.5), where the concentration of stable species are small relative to the concentrations of radical species (H, OH, O, CH3, etc.), radical reactions in the probe produce large changes in the measured species concentrations. At higher equivalence ratios (above 1.5), the effects of probe quenching are diminished due to the small radical concentrations relative to the concentrations of the major stable species.