Since the overall rate of fuel evaporation in combustors is strongly influenced by the gas: drop relative velocity, detailed information on the aerodynamics of the flow in a given combustor configuration is essential for its prediction. Such aerodynamic information can be obtained either from measurements or from mathematical simulation of the events taking place in actual systems. Owing to the advances made in the field of mathematical modelling turbulent flow phenomena, and the development of powerful techniques for solving the partial differential equations of fluid mechanics, the latter approach is on the way to becoming more efficient and economical. The flow equations can be solved using either two or three dimensional, models, however, almost all practical systems may be treated as two-dimensional (axisymmetric) in the important region, which includes the region of soot formation near the fuel injector. The calculation procedure is here applied to the case of fuel injection into a recirculation zone behind a baffle in a duct. The elliptic flow equations are evaluated using the k, ∈ model of turbulence. The simultaneous differential equations of droplet dynamics are evaluated in each cell of the flowfield for each size group of the spray using short time steps. To adequately represent the typical fuel spray size distributions, twenty size intervals of droplets are required. The results clearly demonstrate, the controlling influence of the convective contribution to spray evaporation. A particularly interesting conclusion of the analysis is that, in conditions representative of combustion systems, the droplets have just deviated from their initial conical path towrds the flow direction when they vanish. This phenomena is consistent with experimental observations and to a great extent justifies the use of two-dimensional modelling for the spray evaporation region of practical combustors.