KNOWN ISSUE: Parallel moving mesh calculations with domain interfaces (Class 3 Error)
In a parallel moving mesh calculation in which a partition boundary intersects a domain interface, and there are no periodic boundaries or symmetry planes, it is possible for the CFX-Solver to give incorrect answers, due to the geometry not updating correctly. This will often be reflected in the non-overlap fraction at the interface increasing with time, but it is possible for the non-overlap fraction to stay small with an incorrect answer.
This is caused by a lack of communication of the 'Conservative Interface Flux' condition for the mesh displacement on interfaces at partition boundaries.
If possible, use alternative partitioning methods so that the domain interface and partition boundaries do not intersect.
ANSYS CFX Release 12.1. A custom executable for ANSYS CFX Release 12.0 is available on request.