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Mesh Check fails in OpenFoam ????

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Old   June 29, 2011, 08:39
Default Mesh Check fails in OpenFoam ????
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Hello everyone

I am trying to import mesh from fluent to OpenFoam with 'fluentMeshToFoam'.

Mesh is OK in fluent but in OpenFoam it getting 'Fail' message.

The message is as follow:

Create time

Create polyMesh for time = 0

Time = 0

Mesh stats
points: 16966
internal points: 0
faces: 33082
internal faces: 16118
cells: 8200
boundary patches: 10
point zones: 0
face zones: 0
cell zones: 0

Overall number of cells of each type:
hexahedra: 8200
prisms: 0
wedges: 0
pyramids: 0
tet wedges: 0
tetrahedra: 0
polyhedra: 0

Checking topology...
Boundary definition OK.
Point usage OK.
Upper triangular ordering OK.
Face vertices OK.
Number of regions: 1 (OK).

Checking patch topology for multiply connected surfaces ...
Patch Faces Points Surface topology
Pipeouterwall 60 122 ok (non-closed singly connected)
Pipetipwall 14 30 ok (non-closed singly connected)
Pipeinnerwall 100 202 ok (non-closed singly connected)
Poolbottom 72 146 ok (non-closed singly connected)
Poolwall 110 222 ok (non-closed singly connected)
symm2 8200 8483 ok (non-closed singly connected)
symm1 8200 8483 ok (non-closed singly connected)
Axis 150 302 ok (non-closed singly connected)
Outlet 30 62 ok (non-closed singly connected)
Inlet 28 58 ok (non-closed singly connected)

Checking geometry...
Overall domain bounding box (0 0 0) (2.496 1.1999 0.0209429)
Mesh (non-empty, non-wedge) directions (1 1 1)
Mesh (non-empty) directions (1 1 1)
Boundary openness (4.35429e-19 -6.29787e-18 8.92786e-15) OK.
***High aspect ratio cells found, Max aspect ratio: 1616.7, number of cells 22
<<Writing 22 cells with high aspect ratio to set highAspectRatioCells
Minumum face area = 3.43495e-09. Maximum face area = 0.00638999. Face area magnitudes OK.
Min volume = 2.61256e-10. Max volume = 6.97056e-05. Total volume = 0.0311439. Cell volumes OK.
Mesh non-orthogonality Max: 0.0123584 average: 0.00145212
Non-orthogonality check OK.
Face pyramids OK.
Max skewness = 0.316573 OK.

Failed 1 mesh checks.


Can any one explain what it means and my mesh is OK or what ? Can I proceed further with this mesh or what ?

Thank you in advance !!

With regards,

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Old   June 29, 2011, 10:46
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Travis Carrigan
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Your mesh is fine. OpenFOAM is just complaining about 22 high aspect ratio cells. I believe OpenFOAM thinks any cell with an aspect ratio over 100 is too high, but this isn't an issue, it's more of a warning.
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Old   June 30, 2011, 02:58
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Thank you for your quick reply

So, you mean I can continue with this mesh file ?

With regards,
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Old   June 30, 2011, 05:48
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Hi Gitesh,

I agree with Travis. Your mesh fine. You can continue with it.

"When I meet God, I am going to ask him two questions: Why relativity? And why turbulence? I really believe he will have an answer for the first." Werner Heisenberg
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