One-dimensional simulations of multicomponent counterflow spray flames

Many modern combustion systems such as gas turbines and rocket engines rely on spray combustion, yet this process is not fully understood due to its complex physical processes, involving convective, diffusive, chemical, and multiphase effects. In particular, the effects of preferential evaporation are significant for transportation fuels, which consist of a large number of individual compounds. This research presents numerical investigations of a counterflow spray flame using a one-dimensional solver. An Eulerian-Eulerian approach is employed in which the spray is modeled as a monodisperse, continuous diffuse phase. This technique is used to simulate flames with multicomponent fuels using both preferential and mixture-averaged evaporation models. The effects of preferential evaporation on flame structure are presented via construction of regime diagrams with respect to droplet diameter and strain rate.