[Gmsh] boundaries with gmshToFoam
David Colignon
David.Colignon at ulg.ac.be
Thu Jul 9 14:47:50 CEST 2009
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
CÉCI - Consortium des Équipements de Calcul Intensif
ACE - Applied & Computational Electromagnetics
Sart-Tilman B28
Université de Liège
4000 Liège - BELGIQUE
Tél: +32 (0)4 366 37 32
Fax: +32 (0)4 366 29 10
WWW: http://hpc.montefiore.ulg.ac.be/
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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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