The inuence of evaporation and ignition model on the methanol spray flame simulation

In order to improve the accuracy of the numerical simulation of methanol spray flames, firstly, the methanol evaporation rate value relationship with temperature was obtained by experiments, which forms a new two phase mass transfer model. Secondly, a droplet ignition model under forced convection using Frank-Kamentsky's approximation for treating the nonlinear reaction term is verified. A methanol-air spray flame numerical simulation was conducted using the new evaporation model combined with the droplet ignition model and the prediction results were verified by the experimental data. The comparison results showed that the prediction profiles using the evaporation model are closer to the experimental results than that of the old version model, and the closest profiles are from the simulation with both evaporation model and the ignition model.