[KSCI] Korea Science Citation Index Service

A Numerical Study on Methane-Air Counterflow Diffusion Flames Part 1. Concentration of Fuel

Park, Woe-Chul (Department of Safety Engineering, Pukyong National University)

Publication Information

International Journal of Safety / v.2, no.1, 2003 , pp. 7-11 More about this Journal

Abstract

Structure of the counterflow nonpremixed flames were investigated by using Fire Dynamics Simulator(FDS) and OPPDIF to evaluate FDS for simulations of the diffusion flame. FDS, employed a mixture fraction formulation, were applied to the diluted axisymmetric methane-air nonpremixed counterflow flames. Fuel concentration in the mixture of methane and nitrogen was considered as a numerical parameter in the range from 20% to 100% increasing by 10% by volume at the global strain rates of $a_g = 20S^{-l} and 80S^{-1}$ respectively. In all the computations, the gravity was set to zero since OPPDIF is not able to compute the buoyancy effects. It was shown by the axisymmetric simulation of the flames with FDS that increasing fuel concentration increases the flame thickness and decreases the flame radius. The centerline temperature and axial velocity, and the peek flame temperature showed good agreement between the both methods.

Keywords

counterflow flame; methane; zero gravity; fuel concentration; flame thickness; flame radius;

Citations & Related Records

Times Cited By KSCI : 3 (Citation Analysis)

Reference
Cited By KSCI

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