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-   -   GmshToFoam (http://www.cfd-online.com/Forums/openfoam-meshing-open/61890-gmshtofoam.html)

varun November 30, 2007 09:32

Hi I am trying to convert t
 
Hi

I am trying to convert the "CubeVer1.msh" (present in $FOAM_UTILITIES/mesh/conversion/gmshToFoam/). I created a case gmshTest in $FOAM_RUN/tutorials/icoFoam/ and then executed the following command

gmshToFoam $FOAM_RUN/tutorials/icoFoam/ gmshTest $FOAM_RUN/tutorials/icoFoam/gmshTest/CubeVer1.msh

and got the following output

/*---------------------------------------------------------------------------*\
| ========= | |
| \ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \ / O peration | Version: 1.3 |
| \ / A nd | Web: http://www.openfoam.org |
| \/ M anipulation | |
\*---------------------------------------------------------------------------*/

Exec : gmshToFoam /home/vxv/OpenFOAM/varun-1.3/run/tutorials/icoFoam/ gmshTest /home/vxv/OpenFOAM/varun-1.3/run/tutorials/icoFoam/gmshTest/CubeVer1.msh
Date : Nov 30 2007
Time : 18:49:21
Host : sarkeshwar
PID : 30400
Root : /home/vxv/OpenFOAM/varun-1.3/run/tutorials/icoFoam/
Case : gmshTest
Nprocs : 1
Create time

Read nVerts:167

Read nElems:838

Mapping region 27 to Foam patch 0
Mapping region 28 to Foam patch 1
Mapping region 29 to Foam patch 2
Mapping region 30 to Foam cellZone 0
Cells:
total:622
hex :0
prism:0
pyr :0
tet :622

Patches:
Patch Size
0 36
1 36
2 144

CellZones:
Zone Size
0 622

--> FOAM Warning :
From function polyMesh::polyMesh(... construct from shapes...)
in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 573
Found 216 undefined faces in mesh; adding to default patch.
Finding faces of patch 0
Finding faces of patch 1
Finding faces of patch 2

FaceZones:
Zone Size

Writing zone 0 to cellZone cellZone_0 and cellSet
End


After running the solver, I use the followign command for opeining the case in paraFoam

paraFoam $FOAM_RUN/tutorials/icoFoam/ gmshTest

When I click accept, paraFoam crashes with folowing error:

/*---------------------------------------------------------------------------*\
| ========= | |
| \ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \ / O peration | Version: 1.3 |
| \ / A nd | Web: http://www.openfoam.org |
| \/ M anipulation | |
\*---------------------------------------------------------------------------*/



--> FOAM FATAL IO ERROR : attempt to read beyond EOF

file: /home/vxv/OpenFOAM/varun-1.3/run/tutorials/icoFoam//gmshTest/0/p::internalField at line 30.

From function ITstream::read(token& t)
in file db/IOstreams/Tstreams/ITread.C at line 70.

FOAM exiting

I am new to OpenFoam. I will be extremely grateful if somebody could help.

Thanks
Varun

Goutam January 30, 2012 14:03

gmshToOpenFoam
 
Quote:

Originally Posted by varun (Post 202870)
Hi

I am trying to convert the "CubeVer1.msh" (present in $FOAM_UTILITIES/mesh/conversion/gmshToFoam/). I created a case gmshTest in $FOAM_RUN/tutorials/icoFoam/ and then executed the following command

gmshToFoam $FOAM_RUN/tutorials/icoFoam/ gmshTest $FOAM_RUN/tutorials/icoFoam/gmshTest/CubeVer1.msh

and got the following output

/*---------------------------------------------------------------------------*\
| ========= | |
| \ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \ / O peration | Version: 1.3 |
| \ / A nd | Web: http://www.openfoam.org |
| \/ M anipulation | |
\*---------------------------------------------------------------------------*/

Exec : gmshToFoam /home/vxv/OpenFOAM/varun-1.3/run/tutorials/icoFoam/ gmshTest /home/vxv/OpenFOAM/varun-1.3/run/tutorials/icoFoam/gmshTest/CubeVer1.msh
Date : Nov 30 2007
Time : 18:49:21
Host : sarkeshwar
PID : 30400
Root : /home/vxv/OpenFOAM/varun-1.3/run/tutorials/icoFoam/
Case : gmshTest
Nprocs : 1
Create time

Read nVerts:167

Read nElems:838

Mapping region 27 to Foam patch 0
Mapping region 28 to Foam patch 1
Mapping region 29 to Foam patch 2
Mapping region 30 to Foam cellZone 0
Cells:
total:622
hex :0
prism:0
pyr :0
tet :622

Patches:
Patch Size
0 36
1 36
2 144

CellZones:
Zone Size
0 622

--> FOAM Warning :
From function polyMesh::polyMesh(... construct from shapes...)
in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 573
Found 216 undefined faces in mesh; adding to default patch.
Finding faces of patch 0
Finding faces of patch 1
Finding faces of patch 2

FaceZones:
Zone Size

Writing zone 0 to cellZone cellZone_0 and cellSet
End


After running the solver, I use the followign command for opeining the case in paraFoam

paraFoam $FOAM_RUN/tutorials/icoFoam/ gmshTest

When I click accept, paraFoam crashes with folowing error:

/*---------------------------------------------------------------------------*\
| ========= | |
| \ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \ / O peration | Version: 1.3 |
| \ / A nd | Web: http://www.openfoam.org |
| \/ M anipulation | |
\*---------------------------------------------------------------------------*/



--> FOAM FATAL IO ERROR : attempt to read beyond EOF

file: /home/vxv/OpenFOAM/varun-1.3/run/tutorials/icoFoam//gmshTest/0/p::internalField at line 30.

From function ITstream::read(token& t)
in file db/IOstreams/Tstreams/ITread.C at line 70.

FOAM exiting

I am new to OpenFoam. I will be extremely grateful if somebody could help.

Thanks
Varun

-----------------------------------------

Hi

Varun, I am new user of OpenFOAM and I have the same problem. How I will solve this? COuld you please help me?

Thanks

Goutam

GregorS February 1, 2012 04:27

Maybe you forgot some semicolon - ';' at the end of line in you 0/p file.
Additionally, when executing gmshToFoam on you *.msh file, you need to do some minor changes in your constant/polymesh/boundary file (change patch types, ...).

So for start, please post your:
-/home/vxv/OpenFOAM/varun-1.3/run/tutorials/icoFoam//gmshTest/0/p
-/home/vxv/OpenFOAM/varun-1.3/run/tutorials/icoFoam//gmshTest/constant/polymesh/boundary
files, to see if there are some corrections needed.

Goutam February 1, 2012 06:36

Gmsh
 
1 Attachment(s)
Dear friends,

Could you please see my attached files. You will find my cubic.geo, cubic.msh, and 0/p , 0/U files.

Thanks

matt.mech.eng March 13, 2012 04:24

Hi all,

Was there a solution to this problem I am having similar difficulties, I tried to copy the bubbleFoam tutorial folder and copied my .msh file into the case directory and ran gmshToFoam from this directory.
I get the following output:

/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.0.1 |
| \\ / A nd | Web: www.OpenFOAM.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Build : 2.0.1-51f1de99a4bc
Exec : gmshToFoam approx_profile.msh
Date : Mar 13 2012
Time : 19:04:53
Host : matthew-desktop
PID : 3326
Case : /home/matthew/Documents/FYP/OpenFOAM/TEST_CASE_1/PARABOLIC_TANK
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

Starting to read mesh format at line 2
Read format version 2.2 ascii 0

Starting to read points at line 5
Vertices to be read:1032
Vertices read:1032

Starting to read cells at line 1040
Cells to be read:5271

Unhandled element 15 at line 1042
Unhandled element 15 at line 1043
Unhandled element 15 at line 1044
" " " " " 1045

Unhandled element 15 at line 1053
Unhandled element 1 at line 1054
Unhandled element 1 at line 1055
" " " " " 1056

Unhandled element 1 at line 1225
Mapping region 0 to Foam patch 0
Mapping region 0 to Foam cellZone 0
Cells:
total:3219
hex :0
prism:0
pyr :0
tet :3219

CellZones:
Zone Size
0 3219

Skipping tag at line 6314
Patch 0 gets name patch0

--> FOAM Warning :
From function polyMesh::polyMesh(... construct from shapes...)
in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 614
Found 1868 undefined faces in mesh; adding to default patch.
Finding faces of patch 0

FaceZones:
Zone Size

Writing zone 0 to cellZone cellZone_0 and cellSet
End

What corrections would be required in ploymesh/boundary and 0/p files?

What are unhandled elements? And what has caused undefined faces to occur?

I forgot to mention running paraFoam crashed and I got the following error:


--> FOAM FATAL IO ERROR:
size 1875 is not equal to the given value of 3219

file: /home/matthew/Documents/FYP/OpenFOAM/TEST_CASE_1/PARABOLIC_TANK/0/p from line 17 to line 1921.

From function Field<Type>::Field(const word& keyword, const dictionary&, const label)
in file lnInclude/Field.C at line 236.

FOAM exiting


Cheers


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