For these cases, Direct Numerical Simulation (DNS) are not feasible and the usage of a modelling procedure to capture the effects of the turbulence-flame interactions based, for instance, on Large Eddy Simulation (LES) is necessary. Typically, when a liquid spray is injected directly into a combustion chamber the high evaporation rate of droplets delivers a high concentration of fuel vapor close to the nozzle. This mixture quality leads to a predominance of reactive processes similar to those found in gaseous non-premixed flames. Based on this characteristic, combustion models originally developed to non-premixed flames have been modified to compute turbulent spray flames. On the other hand, in LPP burners the spray is not integrally introduced in the combustion chamber, in reality a mixture of fuel vapor and liquid structures is injected instead. As a consequence regarding the quality of the resulting mixture the flame structure is expected to be controlled by the flame propagation speed rather than by the diffusion of reactants and products. Accordingly, to capture this aspect better analysis on the extension of a single phase premixed flame model are performed in the present investigations. To investigate the structure of propagating partially pre-vaporized spray flames, in this work an Eulerian-Lagrangian spray module relying on the Artificially Thickened Flame (ATF) framework coupled to the Flamelet Generated Manifold (FGM) chemistry reduction method is developed. A detailed mechanism of n-heptane including 88 species and 387 elementary reactions is adopted to correctly address the chemical reactions. The unsteadiness arising from turbulent dispersion of evaporating droplets are captured by the LES method. An evaporation model based on the non equilibrium approach is applied to describe droplet evaporation process. Three of the LPP n-heptane spray flames investigated experimentally in [1] are selected to validate the proposed module.