How to model fluid-porous interface

Yoshi

Hi,

The fluid-porous interface boundary is difficult to set. The flow from the fluid layer cannot enter the porous layer no matter how I try.

I have tried defining the boundary as "internal", "interior" or "interface", but it just doesn't work. What type of boundary is suitable?

There is a function in Fluent called "grid interface", do I need to set them for fluid-porous interface? How can I set it?

thanks.