Droplet Behavior within an LPP Ambiance

This paper deals with the numerical simulation of droplet dispersion and evaporation within an LPP (Lean Premix Prevaporized) burner. The Eulerian- Lagrangian approach was used for this purpose, and a fully two way-coupling was accounted for. For the phase transition, a non-equilibrium evaporation model was applied that differs strongly from the equilibrium one where there are high evapo- ration rates. The non-equilibrium conditions were fulfilled in the investigated con- figuration, as the droplets at the inlet had a mean diameter of 50 mm. The numerical results of water droplet velocities, corresponding fluctuations, and diameters were compared with experimental data. Good agreement was found.