CFD Online Logo CFD Online URL
Home > Forums > Open Source Meshers: Gmsh, Netgen, CGNS, ...

failed 1 mesh checks (gmsh)

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   April 5, 2012, 18:03
Default failed 1 mesh checks (gmsh)
New Member
Join Date: Mar 2012
Posts: 14
Rep Power: 5
appa is on a distinguished road
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
    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
Vertices read

Starting to read cells at line 113178
Cells to be read

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

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

Zone    Size

Writing zone 0 to cellZone InternalField 
and cellSet
then when I run checkMesh, I get this message
PHP Code:
Create time

Create polyMesh 
for time 0


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

Overall number of cells of each type
hexahedra:     5499
:        101311
:        0
:      0
    tet wedges
:    0
:    0
:     0

Checking topology
Boundary definition OK.
Cell to face addressing OK.
Point usage OK.
Upper triangular ordering OK.
Face vertices OK.
Number of regions(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-wedgedirections (1 1 1)
Mesh (non-empty) directions (1 1 1)
Boundary openness (-7.66782e-20 -7.42224e-21 -3.56169e-23OK.
Max cell openness 2.21221e-16 OK.
Max aspect ratio 689.655 OK.
Minumum face area 2.00261e-07Maximum face area 0.0724268.  Face area magnitudes OK.
Min volume 2.00261e-08Max volume 0.00724268.  Total volume 37.6932.  Cell volumes OK.
Mesh non-orthogonality Max48.9289 average7.47029
-orthogonality check OK.
Face pyramids OK.
Max skewness 5.145934 highly skew faces detected which may impair the quality of the results
<<Writing 4 skew faces to set skewFaces
    Coupled point location match 
(average 0OK.

Failed 1 mesh checks.

pisoFoam crashes after few iterations with the error "Exception en point flottant"
can someone help me please
appa is offline   Reply With Quote

Old   July 30, 2015, 06:40
New Member
Join Date: Jun 2015
Posts: 4
Rep Power: 2
venkat346 is on a distinguished road

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.
venkat346 is offline   Reply With Quote

Old   July 30, 2015, 17:09
Default Answer
Senior Member
tareqkh's Avatar
Join Date: Nov 2010
Location: United States
Posts: 138
Rep Power: 6
tareqkh is on a distinguished road
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.

tareqkh is offline   Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Transient boundary conditions Jarrod Sinclair (Sinclair) OpenFOAM Running, Solving & CFD 133 May 6, 2015 06:21
how to set periodic boundary conditions Ganesh FLUENT 13 January 22, 2014 05:11
fluent add additional zones for the mesh file SSL FLUENT 2 January 26, 2008 12:55
Icemcfd 11: Loss of mesh from surface mesh option? Joe CFX 2 March 26, 2007 18:10
user subroutine error CFDUSER CFX 2 December 9, 2006 07:31

All times are GMT -4. The time now is 08:38.