[Weiqiang Liu]

Hi all,

I am doing a catalytic combustion of methane with fluent. The last step of my project, I want to add a catalyst porous layer on the wall to investigate internal diffusion.

In order to do this, I need to define effective diffusion coefficient for every species in porous zone. Effective diffusion coefficients are related to mixture average diffusion coefficients. my problem is are there any macros in fluent UDF with which I can obtain mixture averaged diffusion coefficient for every species directly or do I have to calculate mixture averaged diffusion coefficients by myself with the imported L-J parameters?

Best regards.

weiqiang