Accession Number : AD0751053

Title :   A Chemical Kinetics Model for the Opposed Flow Diffusion Flame,

Corporate Author : STANFORD RESEARCH INST MENLO PARK CALIF

Personal Author(s) : Ablow,C. M. ; Wise,H.

Report Date : 15 OCT 1972

Pagination or Media Count : 36

Abstract : A theoretical analysis is developed of the reaction kinetics limitations leading to the extinction of a counterflow diffusion flame. With increasing mass flux of reactants into the diffusion flame a maximum in the consumption rate of fuel and oxidizer in the reaction zone is encountered. The analysis shows that experimental measurements of the extinction conditions ('apparent flame strengths') are amenable to evaluation of overall kinetic parameters such as the activation energy, the preexponential Arrhenius term, and the order of reaction. The theoretical model is applied to the propane-oxygen-nitrogen system and an activation energy of 21.9 kcal/mole is derived from published experimental flame extinction data. (Author)

Descriptors :   (*GASES, *COMBUSTION), REACTION KINETICS, FLOW FIELDS, JET FLAMES, TRANSPORT PROPERTIES, THERMAL CONDUCTIVITY, NUMERICAL ANALYSIS

Subject Categories : Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE