[NiBa]

i face problem with combustion models. i have no answers to all papers or manuals that i have read. i use the non premixed model and give in the boundary the composition of my fuel. in this model where can i define the composition of my volatiles and the diameter of particles of my fuel? then i try to find what is the connection with disperse face model and injections. there i can define the particles and the diameter but not the composition. should i use these models simultaneously? is it necessary to use these models when i have non premixed combustion models?
thank you