If I try to do this in in the section Boundary Conditions (by selecting the two faces and clicking in Periodic), then I get the following error no matter what is the geometry:


Changed zone 62 and 63 to type interface, and created a non-conformal periodic interface.

Error: wta(1st) to symbol->string

Error Object: #f


It seems that Fluent creates the interface, but then there is an error message, and even if I can simulate the case, I am not sure if the implementation is correct.