[Chander]

Hi,

How to specify periodic boundary condition when one does not know mass flow or pressure drop across the two interfaces in CFX? One can also specify neither of these when one selects 'none'for interface model when selecting translational periodicity for imposing this periodic interface. but what does CFX impose under such a setting?

[ghorrocks]

The "none" setting means the fluid condition is simply mapped across the periodic boundary condition with no changes.