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Undefined faces in mesh

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Old   May 12, 2006, 12:14
Default Hi to all I've made a simple
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Giuseppe Noviello
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Hi to all
I've made a simple case (cube) using GMSH, so when I use gmshToFoam to convert it I've this :
Exec : gmshToFoam /home/giuseppe/OpenFOAM/giuseppe-1.3/run/tutorials/potentialFoam cubo aaaa.msh
Date : May 12 2006
Time : 18:17:59
Host : linux
PID : 8374
Root : /home/giuseppe/OpenFOAM/giuseppe-1.3/run/tutorials/potentialFoam
Case : cubo
Nprocs : 1
Create time

Read nVerts:865

Read nElems:4928

Mapping region 6 to Foam patch 0
Mapping region 15 to Foam patch 1
Mapping region 19 to Foam patch 2
Mapping region 23 to Foam patch 3
Mapping region 27 to Foam patch 4
Mapping region 28 to Foam patch 5
Mapping region 1 to Foam cellZone 0
Cells:
total:4016
hex :0
prism:0
pyr :0
tet :4016

Patches:
Patch Size
0 228
1 94
2 94
3 94
4 86
5 228

CellZones:
Zone Size
0 4016

--> FOAM Warning :
From function polyMesh::polyMesh(... construct from shapes...)
in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 573
Found 824 undefined faces in mesh; adding to default patch.
Finding faces of patch 0
Finding faces of patch 1
Finding faces of patch 2
Finding faces of patch 3
Finding faces of patch 4
Finding faces of patch 5

FaceZones:
Zone Size

Writing zone 0 to cellZone cellZone_0 and cellSet
End
I'm doing somethings of wrong?
Thanks in advantage
Giuseppe
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Old   May 13, 2006, 06:57
Default Not necessarily wrong. What t
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Hrvoje Jasak
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Not necessarily wrong. What this says is that OpenFOAM has found 824 faces external to your geometry that did not have a boundary condition associated with them and it has collected them together in a patch.

If you think you have defined boundary types on the complete external surface of the model, there is a reason to worry; otherwise, just have a look at the default patch and see if it looks OK or not.

Enjoy,

Hrv
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