Partially Premixed Combustion or Finite-Rate
 

Maybe it is not the astutest way to do but...
I can use partially premixed combustion if I have a single inlet with a given air-to-fuel ratio, or my results are totally wrong?

I don't like very much Finite-Rate because I would know Turbulent Flame Speed in my combustor.

I try both method and I get two different results: which is it the correct solution?