When modifications (e.g. name changes, location changes, creation/deletion) are made to Named Selections in DesignModeler, some changes are not reflected in CFX-Mesh after perrforming a Geometry Update action.
This happens because there is no internal identifier associated with a Named Selection other then the user specified name. Hence when it is renamed, for example, the association between the Named Selection and the Region in CFX-Mesh is lost.
The following behaviour should also be noted:
If you modify the location of an existing Named Selection in DesignModeler, then when you update the geometry in CFX-Mesh, this modification will be applied to the equivalent Composite 2D Region in CFX-Mesh as long as the new location does not overlap with the location of any existing Composite 2D Regions in CFX-Mesh (including other regions generated from Named Selections).
If you delete a Named Selection in DesignModeler then when you update the geometry in CFX-Mesh the equivalent Composite 2D Region is not deleted. You must delete it manually if you no longer want this region in CFX-Mesh.
If you rename a Named Selection in DesignModeler, then when you update the geometry in CFX-Mesh, the Named Selections will not be re-imported. You must either rename or delete the equivalent Composite 2D Region in CFX-Mesh before updating the geometry. This is because CFX-Mesh effectively sees the renamed Named Selection as a new Named Selection, and then finds that its location overlaps with the existing Composite 2D Region which has the original name of the Named Selection.
There is no workaround.
ANSYS CFX Release 11.0.