[Pj.]

Hi everybody

I'm trying to run a case containing a cyclic BC using a mesh prepared with PointWise.
I'm facing some problem with the correct exportation of the two cyclic boundaries patch. I created the periodic faces (or domains in Pointwise language) in Pointwise using the create > periodic > translate command. Then I exported the mesh as OpenFoam mesh and ran the command foamUpgradeCyclics to upgrade the cyclic definition to the "new" format.

When i run checkMesh it warns me:

 **Error in coupled point location: 1 faces have their 0th or 
consecutive vertex not opposite their coupled equivalent. Average mismatch 0.

To better understand the problem I prepared two 1-by-1-by-1 meshes (a mesh with only one cell) with a cyclic BC on two opposite faces both with Pointwise and blockMesh.

I figured that the problem is in the way Pointwise orders the points of the faces of the periodic boundaries.

To make an example lets say that I want to cycle the face 1-2-3-4 to the face 1'-2'-3'-4'.
BlockMesh create two faces:
face 1: (1 2 3 4)
face 2: (1' 4' 3' 2')
that is to say that:
-the two face start with the "same" point
-the points are take once clockwise and once counter-clockwise (this way the normal is always pointing inside the volume)

Pointwise create two faces:
face 1: (1 2 3 4)
face 2: (4' 3' 2' 1')
that is to say that:
-the two face DOESN'T start with the "same" point
-the points are take once clockwise and once counter-clockwise (this way the normal is always pointing inside the volume)

As I said: checkMesh returns the error I copied above with the Pointwise version, while it accepts the checkMesh version.
I link a tar file containing the test case with the pointwise .pw file, the blockMesh dict and two polyMesh folders, one with the mesh generated by Pointwise (PW) and the one generated by blockMesh (BM).
https://www.dropbox.com/s/6y0iba661m...ST.tar.gz?dl=0

How can I solve this problem (on a way more complex mesh of course)?

Thank you very much,
Luca