[rakendd]

Hi all
My computational domain is 2d mixing layers. For top and bottom walls instead of using wall BC s I want to use periodic/cyclic boundary conditions. (as Im just interested in mixing process not in capturing boundary growth)
1. Can cyclic BC s be used for 2d?
2. Top and bottom velocities are different, but cyclic BC needs neighbourPatch and consider these two patches as same.
But in my case these two are different velocity homogeneous flows.
So is there any other BC s that can be used for this two homogeneous mixing layers?
Thank you.