[MissCFD]

Here is the description of this expert parameter given by CFX guide.

This parameter can be used to enable a modified algorithm for partitioning
moving mesh cases. The modified algorithm recognizes moving domain
interfaces. A value of 1 selects the newer algorithm. A value of 0 selects
the original algorithm.

The modified algorithm aims to keep both sides of a GGI interface within
the same partition, potentially improving convergence behavior in parallel
and reducing communication requirements between partitions.

This expert parameter affects parallel runs only; it has no effect on serial runs.

I don’t understand if this parameter is useful for all interfaces (stage, frozen rotor and transient rotor stator) when we have one rotating domain motion in our simulation or if they are talking about a mesh motion (mesh deformation) in a domain or maybe both?

Thank you very much for your help !

[ghorrocks]

The comment only applies to when the mesh is moving. I would suspect that is either mesh deformation simulations or transient rotor-stator simulations. Stage and frozen rotor simulations are not affected by that.