[Gmsh] boundaries with gmshToFoam

[David Colignon]

Hi Ouafa,

it is a question for the OpenFoam mailing-list. We do not maintain the gmshToFoam script and we don't use OpenFoam...

Cheers,

Dave


-- 
David Colignon, Ph.D.
Collaborateur Logistique du F.R.S.-FNRS
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ACE - Applied & Computational Electromagnetics
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ouafa bouloumou wrote:
> hello,
>  
> I try to generate a mesh for use in OpenFoam  by gmshToFoam conversion, 
> but I alwas get the warning:
>  
> --> FOAM Warning :
>     From function polyMesh::polyMesh(... construct from shapes...)
>     in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 576
>     Found 28864 undefined faces in mesh; adding to default patch.
> Finding faces of patch 0
> Finding faces of patch 1
> Finding faces of patch 2
> --> FOAM Warning : Not using gmsh face 4(1446 14016 14017 1447) since 
> zero vertex is not on boundary of polyMesh
> .........
>  
> However i got polymesh directory with all files. but the faces or 
> boundaries are not reading.
> patches in boundary files are even taking nFace=0 even if startface#0 in 
> some patches.
> it seems to be arbitrary because i change many times the order and the 
> way to define the physical surface and the result is different  all the 
> time.
> here attached my script. and checkMesh outline. 
>  
> Any idea what I am doing wrong? Thanks
>  
>  
> Ouafa
>  
> /*---------------------------------------------------------------------------*\
> | =========                 
> |                                                 |
> | \\      /  F ield         | OpenFOAM: The Open Source CFD 
> Toolbox           |
> |  \\    /   O peration     | Version:  
> 1.5                                   |
> |   \\  /    A nd           | Web:      
> http://www.OpenFOAM.org               |
> |    \\/     M anipulation  
> |                                                 |
> \*---------------------------------------------------------------------------*/
> Exec   : checkMesh
> Date   : Jul 09 2009
> Time   : 15:36:04
> Host   : lambda31
> PID    : 13084
> Case   : /home/flurec/commun/ouafa/tmpgmsh
> nProcs : 1
> // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
> * * //
> Create time
> Create polyMesh for time = constant
> Time = constant
> Mesh stats
>     points:           135894
>     faces:            378092
>     internal faces:   349228
>     cells:            121220
>     boundary patches: 6
>     point zones:      0
>     face zones:       2
>     cell zones:       26
> Number of cells of each type:
>     hexahedra:     121220
>     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.
>     Topological cell zip-up check OK.
>     Face vertices OK.
>     Face-face connectivity OK.
>     Number of regions: 1 (OK).
> Checking patch topology for multiply connected surfaces ...
>     Patch               Faces    Points    Surface
>     jonction            2565     2604      ok (not multiply connected)
>     interface           5111     5302      ok (not multiply connected)
>     *inlet                      0          0             ok (empty)
>     outlet                    0          0             ok (empty)
> *    wall                12122    12354     ok (not multiply connected)
>     defaultFaces        9066     9450    ok (not multiply connected)
> Checking geometry...
>     Domain bounding box: (-100 0 -50) (150 50 50)
>     Boundary openness (-7.18902e-18 3.05372e-15 9.36245e-17) OK.
>     Max cell openness = 2.67949e-16 OK.
>     Max aspect ratio = 26.7476 OK.
>     Minumum face area = 0.312226. Maximum face area = 9.50492.  Face 
> area magnitudes OK.
>     Min volume = 1.56113. Max volume = 15.7656.  Total volume = 
> 1.25e+06.  Cell volumes OK.
>     Mesh non-orthogonality Max: 41.0303 average: 5.01782
>     Non-orthogonality check OK.
>     Face pyramids OK.
>     Max skewness = 0.468149 OK.
>     All angles in faces OK.
>     Face flatness (1 = flat, 0 = butterfly) : average = 1  min = 1
>     All face flatness OK.
> Mesh OK.
> End
>  
> 
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