[Matt_h]

Hello

I am new to CFD and openFoam in general and having problems converting my mesh.

It is a fairly simple model of 2D flow around a cylinder, I have two cases one laminar and one turbulent however I get the same error with both when I run the command ideasUnvToFoam and get the following :

/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.2.1 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Build : 2.2.1-57f3c3617a2d
Exec : ideasUnvToFoam Mesh_2.unv
Date : Oct 06 2013
Time : 19:47:30
Host : "Matt-PC"
PID : 2997
Case : /home/matt/Documents/Mech444/cylinder_turbulent
nProcs : 1
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster
allowSystemOperations : Disallowing user-supplied system call operations

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time

Processing tag:164
Starting reading units at line 3.
l:1
units:" SI: Meter (newton)"
unitType:2
Unit factors:
Length scale : 1
Force scale : 1
Temperature scale : 1
Temperature offset : 273.15


Processing tag:2420
Skipping tag 2420 on line 9
Skipping section at line 9.

Processing tag:2411
Starting reading points at line 20.
Read 11764 points.

Processing tag:2412
Starting reading cells at line 23551.
First occurrence of element type 11 for cell 1 at line 23552
First occurrence of element type 41 for cell 439 at line 24866
First occurrence of element type 111 for cell 16125 at line 56238
Read 45131 cells and 15686 boundary faces.

Processing tag:2467
Starting reading patches at line 146502.
For group 1 named inlet trying to read 278 patch face indices.
For group 2 named outlet trying to read 278 patch face indices.
For group 3 named top_bottom trying to read 1540 patch face indices.
For group 4 named front_back trying to read 13354 patch face indices.
For group 5 named top_bottom trying to read 1540 patch face indices.
For group 6 named face trying to read 236 patch face indices.

Sorting boundary faces according to group (patch)
0: inlet is patch
1: outlet is patch
2: top_bottom is patch
3: front_back is patch
4: top_bottom is faceZone
5: face is patch

Constructing mesh with non-default patches of size:
inlet 278
outlet 278
top_bottom 1540
front_back 13354
face 236

Adding cell and face zones
Face Zone top_bottom 1540
ideasUnvToFoam: ideasUnvToFoam.C:1273: int main(int, char**): Assertion `noveau > -1' failed.
Aborted (core dumped)


I have searched and found a similar problem being fixed with a patch but this didn't seem to work for me. Could anyone advise please?

Thanks
Matt

[Matt_h]

Silly error, I put in top_bottom twice...now fixed

[xerxes92005]

Hi Matt. I have the same problem.

my geometry and mesh groups were created in salome-meca and seem to be ok. no duplicate faces or extra edges. when I use ideasUnvToFoam,terminal issues warning:

Sorting boundary faces according to group (patch)
0: inlet is patch
1: outlet is patch
2: cylinder is faceZone
3: top is patch
4: bottom is patch
5: front is patch
6: back is faceZone

Constructing mesh with non-default patches of size:
inlet 450
outlet 450
top 450
bottom 450
front 5973

--> FOAM Warning :
From function polyMesh:olyMesh(... construct from shapes...)
in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 626
Found 6423 undefined faces in mesh; adding to default patch.
Adding cell and face zones
Face Zone cylinder 2025
ideasUnvToFoam: ideasUnvToFoam.C:1271: int main(int, char**): Assertion `noveau > -1' failed.
Aborted (core dumped)

how did you manage to fix it? what do you mean by "put top_bottom" twice??

[arpitpatel]

Did anybody find a way around it ?
I am only 4 different face groups and I am getting the same error ..