diffusivity modell
 

Hello fluent users,

I changed the diffusivity modell from dilute approximation to multicomponent + thermodiffusion; as I tried to extract the Diffusion coefficients the drop down list didn't show any diffusion coefficient except those for thermodiffusion. is there any explanation for this? the strange thing is that modelling diffusion with the dilute approximation modell doesn't show this effect and the diffusion coefficient are accessible. any idea what can have happend?

thanks in advance