[HELP]:laminar reaction in cfx44
 

Hi cfxusers, I am working on simulating laminar reaction in tube reactor with heated wall. A(g)+B(g)-->C(g)+D(g) in LAMINAR flow. may I use INFOCHEM database for setting the species? I do this but it said the species cannot be dealed. I want to set myself reaction rate for the reaction without the Arehnius law. would you give me a example with user subroutine? may I set different diffusivity for different species? (the diffusivity is function of temperature.

if someone has the related experience, pls give me some examples for it?

thanks lots