Large eddy simulation of a turbulent diusion flame with Conditional Source-term Estimation

Direct numerical simulation (DNS) of turbulent reacting flows at technically rele-vant high Reynolds numbers will be computationally unaordable for the foreseeable future. Large eddy simulation (LES) represents an attractive alternative. The basic idea of LES is to resolve only the large scale motion of the flow while modeling the contribution of the small (i.e. sub-grid) scales, which tend to be more isotropic, hence, easier to model. Resolving only the large scales keeps the computational cost aordable. The LES set of equations is obtained by applying a spatial lter to the governing transport equations of mass, momentum and energy leading t