How can I assign a Boundary Condition (face permeability) for perforated pipe in Ansys Fluent ? If I use thin porous media, what will be that value?

I am trying to model a 2D pipe submerged in water using Ansys Fluent . I assigned BC for pipe is porous jump. So I need face permeability (alpha), thickness and C2. I don't understand the alpha...

12 July 2013 7,724 1 View