Implementation of the Filtered Turbulent Flame Model in Non-premixed Combustion Simulation

The interaction between flame and turbulence leads to challenging flame dynamics and modeling issues. In this work, a newly proposed filtered turbulent flame model is implemented in the framework of large eddy simulations for non-premixed turbulent combustion. The general principles of model realization are developed, including the structure and physics of the filtered flame, tabulation setup, and the numerical algorithm. Because of the involved modeling parameters for tabulation can be directly calculated from either the resolved or subgrid model quantities, the filtered turbulent flame model is in principle favorable to improve the numerical predictability. Tentative numerical tests and comparisons with other models justify this modeling idea.