Modeling Study of Flame Structure in Low-Pressure, Laminar, Pre-Mixed Methane Flames

摘要

Low pressure, laminar, methane flames were modeled numerically using a fully implicit, one-dimensional flame code with detailed chemical kinetics and adaptive gridding. Calculated major species profiles were in good agreement with experiment; and most radical and intermediate species showed fair to good agreement. The calculated flame velocity was about half of experimental and was insensitive to variation of species diffusion coefficients and chemical reaction rate constants except decomposition of HCO. Quadrupling that rate constant improved the calculated flame velocity, as well as radical species profiles. Insight was gained into the physical and chemical processes governing flame propagation. (ERA citation 04:005404)