[Jonathan]

Hi guys,

i have a series of meshes created in ICEM which i am using for some turbomachinery calculations. They pass all the necessary mesh checks in ICEM, and run fine in Fluent.

However, when trying to move the case across to openFoam, I am getting the following error message after running checkMesh.

Checking patch topology for multiply connected surfaces ...
    Patch               Faces    Points   Surface topology                  
    ENDWALL             9448     9739     ok (non-closed singly connected)  
    INLET               5112     5291     ok (non-closed singly connected)  
    PERIODIC            21868    22165    ok (non-closed singly connected)  
    periodic_sh         21868    22165    ok (non-closed singly connected)  
    CASING              10753    10288    ok (non-closed singly connected)  
    ROTOR               26176    25629    ok (non-closed singly connected)  
    S2_HUB              1421     1500     ok (non-closed singly connected)  
    S2_CASING           1421     1500     ok (non-closed singly connected)  
    S2_OUTLET           4118     4290     ok (non-closed singly connected)  
    S2_PERIODIC         6958     7150     ok (non-closed singly connected)  
    periodic_sh_1       6958     7150     ok (non-closed singly connected)  

Checking geometry...
    Overall domain bounding box (0.130442 -0.0549434 -0.037182) (0.203 0.0872359 0.13)
    Mesh (non-empty, non-wedge) directions (1 1 1)
    Mesh (non-empty) directions (1 1 1)
    Boundary openness (4.86395e-16 -1.29608e-15 -1.3501e-15) OK.
    Max cell openness = 7.93896e-15 OK.
    Max aspect ratio = 224.232 OK.
    Minumum face area = 5.1445e-11. Maximum face area = 4.86281e-06.  Face area magnitudes OK.
    Min volume = 2.31935e-15. Max volume = 3.03066e-09.  Total volume = 0.000532324.  Cell volumes OK.
    Mesh non-orthogonality Max: 74.6538 average: 22.1037
   *Number of severely non-orthogonal faces: 1329.
    Non-orthogonality check OK.
  <<Writing 1329 non-orthogonal faces to set nonOrthoFaces
    Face pyramids OK.
    Max skewness = 2.66588 OK.
  **Error in coupled point location: 26520 faces have their 0th vertex not opposite their coupled equivalent. Average mismatch 0.000975553.
  <<Writing 26520 faces with incorrectly matched 0th vertex to set coupledFaces

Failed 1 mesh checks.

End

I am converting the mesh using fluent3DMeshtoFoam, and have manually correctly the periodics after import in the boundary dictionary.

Any ideas as to what is going wrong? any help always much appreciated,

best regards
jonathan