LES help
 

Hi. I'm trying to LES a concentric annulus flow using periodic BC. Actually, I'm talking about two pairs of periodic BC faces (don't want to mesh the whole 360). One in the flow direction (X)-parallel to the axis and the other on the sides of say 30 degrees sector which should be at 30 one to the other. Is there going to be a problem in Fluent? I.e. will it be enough to define flow in X direction in the periodic BC and it will be equal velocities etc. at the second pair of faces? Thank you.