An Opposed Jet Quasi-Monodisperse Spray Diffusion Flame

Abstract

Abstract Abstract— A theoretical study of an opposed jet spray diffusion flame is presented. The fuel is introduced into the system in the form of liquid droplets suspended homogeneously in a nitrogen jet stream opposed to an air jet stream of the same hydrodynamic properties. An initial monodisperse droplet size distribution is considered and it is assumed that the droplets follow the flow streamlines. Tambour's (1984) Eulerian "sectional" approach is employed to account for the downstream droplet size changes due to vaporization. Since the monodisperse distribution does not persist, a single "monosectional" equation for quasi-monodisperse sprays is used. The effects of (i) initial droplet and vapor mass fractions, (ii) initial droplet size, and (iii) droplet rate of vaporization, on flame location, temperature and species concentration distributions, for an n-decane fuel spray, are analyzed.