On Flame Propagation in Explosive Mixtures of Gases: Iii. Flame Propagation in Mixtures of Methane and Nitrogen Air, Helium Air, and Argon Air

Abstract

The general theory developed in an earlier paper of the author is applied t o the combustion of mistnres of methane and nitrogen air, helium air, and argon air where dissociation of the end products is negligible. The oxygen atom chain is assumed t o be rate-determining. Absolute values of the flame velocity are c o m p~~t e d for mixtures containing 87; of methane and for the stoichiometric mixtures. The results are found t o be in very good agreement 116th esperimenta1 values. Dependence on pressure is 1il;ewise found t o be in very good agreement with experiments. The temperature distribution in the flame zone is also computed.

Experimental Studies of Explosions of Methane-Air Mixtures in a Constant Volume Chamber

“…Knowledge of the relationship between the magnitude of the explosion pressure and the location of the flame front and its velocity led to relatively simple method of arriving at burning velocities (e.g., Abdel-Gayed et al, 1986, Andrews & Bradley, 1972a, 1972bBabkin & Kozachenko, 1966;Bradley & Mitcheson, 1976;Kawakami et al, 1986;Phylaktou & Andrews, 1993;Saeed & Stone, 2004;Sandri, 1956). In addition, this can lead to improved numerical modeling of flame propagation during explosions of gaseous mixtures with the help of complex computer codes (i.e., FLACS-98, FLUENT 6.0, and KIVA-3 V).…”