Flame structure and flame reaction kinetics I. Solution of conservation equations and application to rich hydrogen-oxygen flames

Abstract

The time dependent heat conduction and diffusion equations have been set up for some simplified reaction mechanisms representing a fuel-rich hydrogen-nitrogen-oxygen flame, and have been solved by finite difference methods. The effects on the flame properties of changes in some of the reaction parameters and the transport properties of the gas mixture have been examined and some comparisons made with experimental results. The validity of the frequently made assumption regarding equilibration of H, OH and O between themselves in the burnt gas or radical recombination region of such flames has been verified for H and OH in a flame having a final temperature of 1072 $^\circ$K. The effects on the flame model of some assumed contributions of reactions of hydroperoxyl to the flame mechanism are also described.