Opposed flow polydisperse spray diffusion flames: Steady state and extinction analysis

Theoretical analysis of polydisperse water spray extinction of opposed flow diffusion flames

“…Clearly, the effect of the spray enters via all the outer solution parameters that appear in Eqs. (16) and (17).…”

“…In order to analyze the problem at hand we adopt an approach we have successfully applied to predict extinction conditions of counter-flow spray diffusion flames [11,15,16] without water droplets present as an active flame suppressant. When the Damkohler number D and the activation energy parameter T a are large, chemical reaction is confined to a thin zone located at x ¼ x f ; where the subscript ''f'' denotes the value at the flame front location.…”

Effects of finite-rate droplet evaporation on the extinction of spherical burner-stabilized diffusion flames

“…Wichman and Yang [24] analyzed a double spray counterflow diffusion flame, in which the unity Lewis number assumption was still retained. Greenberg and coworkers [25][26][27][28][29][30][31] systematically examined the effects of droplet evaporation and nonunity Lewis number on the kinetic extinction of counterflow spray diffusion flames. They found that the presence of spray promotes kinetic extinction.…”

“…They found that the presence of spray promotes kinetic extinction. However, in these studies [25][26][27][28][29][30][31], radiative heat loss was not considered and thereby the radiative extinction limit of spray diffusion flames was not observed. Santoro et al [32,33] experimentally and numerically investigated the vortex-induced extinction behavior in the counterflow spray diffusion flames.…”

Analysis of steady state polydisperse counterflow spray diffusion flames in the large Stokes number limit

“…In previous works [1][2][3][4] properties and conditions for extinguishment critically depend on a delicate interaction between the parameters characterizing the spray and the transport properties of the host gas. Whereas the former include the total droplet loading, the liquid fuel volatility, the initial internal size distribution of the droplets within the spray (i.e.…”