Extinction and Re-Ignition Predictions Using Eddy Dissipation Concept and Flamelet Generated Manifold Models for a Premixed Piloted Turbulent Jet Burner

Abstract

The Sydney piloted premixed jet burner (PPJB) experiments are numerically simulated to assess the flamelet generated manifold (FGM) model's ability to predict finite-rate and turbulence/chemistry-interaction effects under low Damköhler number. The results are also compared and assessed with the finite rate eddy-dissipation concept (EDC) model. A reduced CH 4 /air mechanism of 71 species, that considers low-and hightemperature chemistry, is derived from the Model Fuel Library (MFL) and compared with the master MFL mechanism. The same mechanism is used for chemistry closure for both FGM and EDC models. The PPJB simulations are found to be sensitive to the inflow profiles and different power-law profiles are adopted for different centerline jet bulk velocity setups. An overall good match with the experimental data is observed for the non-reactive flow cases, with general under-prediction for the turbulent kinetic energy (TKE). For the PM150 flame conditions presented here, the FGM showed reasonable prediction of the temperature and major species, with under-prediction for OH and over-prediction