[Bruno Machado]

Hi all,

In my problem, I need to use the Maxwell-Stefan equation to solve the diffusion of multi species. Nevertheless, Fluent only allows me to define the binary diffusion coefficient as constant or polynomial (f(T)).

Is there any way of defining the binary coefficients through UDF?

In addition to that, my diffusion coefficients have to be corrected by the liquid water (UDS) present in the pores of my porous medium. Considering there is no way of directly define binary coefficients through UDF, is there any work around you could possible suggest to solve this problem?

Thanks in advance.