The laminar finite-rate model computes the chemical source terms using Arrhenius expressions, and ignores the effects of turbulent fluctuations. The model is exact for laminar flames, but is generally inaccurate for turbulent flames due to highly non-linear Arrhenius chemical kinetics. The laminar model may, however, be acceptable for combustion with relatively slow chemistry and small turbulence-chemistry interaction, such as supersonic flames.
The net source of chemical species due to reaction is computed as the sum of the Arrhenius reaction sources over the reactions that the species participate in:
where is the molecular weight of species and is the Arrhenius molar rate of creation/destruction of species in reaction
So if i am define overall rate of equation through UDF will this Ri be computed ?