mesh interaction
 

I have a wing model that was to large to mesh in one go on my system so I had meshed them in workbench seperately. Once in CFX pre I have used the mesh interaction and set the wing add ons to interface (periodic) with the wing surface. As the wing and box are one mesh and the add ons form another 2. Should i be interfacing the add ons mesh, wing mesh and the box, or just the add ons with the wing?

Many Thanks

Andy