抄録
A two-dimensional numerical simulation is applied to spray flames formed in a laminar counterflow, and the effect of droplet size on soot formation behavior is investigated in detail. N-decane (C10H22) is used as a liquid fuel, and the droplet motion is calculated by the Lagrangian method. A one-step global reaction is employed for the combustion heat release. A kinetically based soot formation model with flamelet model is employed to predict the soot formation. Radiation is taken into account using the discrete ordinate method. The results showed that the diffusion and premixed combustion co-exist in the spray flame and the soot is mainly formed in the spray diffusion flame region. The soot formation behavior is strongly affected by the droplet size. The soot volume fraction increases with the droplet size.
