[appa]

Hello!
I am trying to run a 3D mesh created with gmsh. I used the gmshToFoam command

PHP Code:

Create time

Starting to read mesh format at line 2
Read format version 2  ascii 0

Starting to read physical names at line 5
Physical names:5
    Surface 1    inlet
    Surface 2    outlet
    Surface 3    airfoil
    Surface 4    FrontAndBack
    Volume 5    InternalField

Starting to read points at line 13
Vertices to be read:113162
Vertices read:113162

Starting to read cells at line 113178
Cells to be read:321283

Mapping region 4 to Foam patch 0
Mapping region 1 to Foam patch 1
Mapping region 2 to Foam patch 2
Mapping region 3 to Foam patch 3
Mapping region 5 to Foam cellZone 0
Cells:
    total:106810
    hex  :5499
    prism:101311
    pyr  :0
    tet  :0

CellZones:
Zone    Size
    0    106810

Skipping tag  at line 434464
Patch 0 gets name FrontAndBack
Patch 1 gets name inlet
Patch 2 gets name outlet
Patch 3 gets name airfoil

--> FOAM Warning : 
    From function polyMesh::polyMesh(... construct from shapes...)
    in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 619
    Found 214473 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

FaceZones:
Zone    Size

Writing zone 0 to cellZone InternalField and cellSet
End 


then when I run checkMesh, I get this message

PHP Code:

Create time

Create polyMesh for time = 0

Time = 0

Mesh stats
    points:           113162
    internal points:  0
    faces:            377011
    internal faces:   162538
    cells:            106810
    boundary patches: 4
    point zones:      0
    face zones:       0
    cell zones:       1

Overall number of cells of each type:
    hexahedra:     5499
    prisms:        101311
    wedges:        0
    pyramids:      0
    tet wedges:    0
    tetrahedra:    0
    polyhedra:     0

Checking topology...
    Boundary definition OK.
    Cell to face addressing 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                  
    FrontAndBack        213620   113162   ok (non-closed singly connected)  
    inlet               176      354      ok (non-closed singly connected)  
    outlet              66       134      ok (non-closed singly connected)  
    airfoil             611      1222     ok (non-closed singly connected)  

Checking geometry...
    Overall domain bounding box (-10 -10 0) (11 10 0.1)
    Mesh (non-empty, non-wedge) directions (1 1 1)
    Mesh (non-empty) directions (1 1 1)
    Boundary openness (-7.66782e-20 -7.42224e-21 -3.56169e-23) OK.
    Max cell openness = 2.21221e-16 OK.
    Max aspect ratio = 689.655 OK.
    Minumum face area = 2.00261e-07. Maximum face area = 0.0724268.  Face area magnitudes OK.
    Min volume = 2.00261e-08. Max volume = 0.00724268.  Total volume = 37.6932.  Cell volumes OK.
    Mesh non-orthogonality Max: 48.9289 average: 7.47029
    Non-orthogonality check OK.
    Face pyramids OK.
 ***Max skewness = 5.14593, 4 highly skew faces detected which may impair the quality of the results
  <<Writing 4 skew faces to set skewFaces
    Coupled point location match (average 0) OK.

Failed 1 mesh checks.

End 


pisoFoam crashes after few iterations with the error "Exception en point flottant"
can someone help me please

[venkat346]

Hi,

Have you got answer for this, why checkMesh showing Failed 1 mesh checks.

End .

I also face the same prob, If you know please share with me.
what changes I can made?

thanks in advance.

[tareqkh]

Hey Guys,

I faced the same problem before and discovered that I had to go to polyMesh folder and then boundary. Finally, change your patches in the boundary to your boundary in the 0 folder. If nothing has happened, send me the file so then I will be able to fix it.

Best,