The Extended Coherent Flame Model (ECFM) is a combined model employing:
A model for the progress of the global reaction: Extended Coherent Flame Model (ECFM), which is a member of the class of Flame Surface Density Models
A model for the composition of the reacted and non-reacted fractions of the fluid: Laminar Flamelet with PDF. For partially premixed configurations this model does also implement post-flame fuel oxidation (diffusion flame tail)
The coupling of ECFM with the flamelet model for effects of non-premixedness extends the range of applicability of the model similar to the three-zones extension of the model found in the literature (ECFM-3Z).
The following topics will be discussed:
Information on the theory behind the Extended Coherent Flame Model is available in Extended Coherent Flame Model (ECFM) in the CFX-Solver Theory Guide.