8.4.1 Restrictions and Assumptions

The following restrictions apply to all flamelet models in ANSYS FLUENT:

• Only a single mixture fraction can be modeled; two-mixture-fraction flamelet models are not allowed.

• The mixture fraction is assumed to follow the $\beta$-function PDF, and scalar dissipation fluctuations are ignored.

• Empirically-based streams cannot be used with the flamelet model.