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-   -   Mesh Check fails in OpenFoam ???? (http://www.cfd-online.com/Forums/openfoam/90046-mesh-check-fails-openfoam.html)

Gitesh P June 29, 2011 09:39

Mesh Check fails in OpenFoam ????
 
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.

End


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,
Gitesh


tcarrigan June 29, 2011 11:46

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.

Gitesh P June 30, 2011 03:58

Thank you for your quick reply :)

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

With regards,
Gitesh

val46 June 30, 2011 06:48

Hi Gitesh,

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


Regards,
Toni


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