Defining mixture in dpm combustion modelling
 

Hello everyone!

I have a problem regarding combustion dpm modelling. As I define mixture in materials, FLuent user guide says, that the last species should be the bulk species. But if I introduce at the inlet mostly oxygen, which almost instantenously reacts, then it will become CO2. So the question is whether O2 or CO2 should be my bulk species?

Thanks in advance

Anybody? :(