Hi! I want to make a mesh o
 

Hi!

I want to make a mesh of a duct, that have a internal filter that correct the direction of the velocity. But, when I try to make a patch for this, OpenFOAM generate a error when making the mesh.

The pic of the case is in this link:
http://geocities.yahoo.com.br/caiocramer/ducv.gif

How can I define a patch for internal faces?

Thank you