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Old   February 25, 2008, 21:19
Default Fluent3DMeshToFoam
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Simon Vun
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Hi there,

I have a fluent mesh (.msh) file that i wanted to convert in OF-1.4.1 and when using fluent3DMeshToFoam got the following error:

Exec : fluent3DMeshToFoam /home/vuns/OpenFOAM/vuns-1.4.1/run/BluntBody/ BB01 fluent.msh
Date : Feb 26 2008
Time : 12:39:10
Host : flightlab4
PID : 17426
Root : /home/vuns/OpenFOAM/vuns-1.4.1/run/BluntBody/
Case : BB01
Nprocs : 1
Create time

Dimension of grid: 3


--> FOAM FATAL ERROR : Do not understand characters:

From function fluentMeshToFoam::lexer
in file fluentMeshToFoam.L at line 703.

FOAM exiting

However when i used fluentMeshToFoam the converter worked fine. Was just wondering if anyone has seen this before or if i've done something wrong?

Thanks

Simon.
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Old   February 26, 2008, 03:27
Default Is this a mesh only file? We f
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Mattijs Janssens
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Is this a mesh only file? We found that the '#' character (used in boolean constants) can give problems. Have a look through the file and remove the offending sections or resave as mesh only.
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Old   February 27, 2008, 00:41
Default Hi Mattijs, Thanks for the
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Hi Mattijs,

Thanks for the advice because on your recommendation i went into the file and realized it was in a dos format. So just converted the file using "dos2unix" command and it worked.

However i've struck another problem but this time with the mesh. Here's the error,


Exec : fluent3DMeshToFoam /home/vuns/OpenFOAM/vuns-1.4.1/run/BluntBody/test/ PotentialBB01 fluent.msh
Date : Feb 27 2008
Time : 16:33:50
Host : flightlab4
PID : 9037
Root : /home/vuns/OpenFOAM/vuns-1.4.1/run/BluntBody/test/
Case : PotentialBB01
Nprocs : 1
Create time

Dimension of grid: 3
Number of points: 55387
PointGroup: 11 start: 0 end: 55386. Reading points...done.
Number of cells: 185764
CellGroup: 12 start: 0 end: 185763 type: 1
Number of faces: 408736
FaceGroup: 13 start: 0 end: 395703. Reading mixed faces...done.
FaceGroup: 14 start: 395704 end: 395747. Reading uniform faces...done.
FaceGroup: 15 start: 395748 end: 395786. Reading uniform faces...done.
FaceGroup: 16 start: 395787 end: 399056. Reading mixed faces...done.
FaceGroup: 17 start: 399057 end: 399289. Reading uniform faces...done.
FaceGroup: 18 start: 399290 end: 399497. Reading uniform faces...done.
FaceGroup: 19 start: 399498 end: 401062. Reading uniform faces...done.
FaceGroup: 20 start: 401063 end: 408735. Reading uniform faces...done.
Zone: 12 name: BODY type: fluid. Reading zone data...done.
Zone: 13 name: int_BODY type: interior. Reading zone data...done.
Zone: 14 name: INLET type: velocity-inlet. Reading zone data...done.
Zone: 15 name: OUTLET type: pressure-outlet. Reading zone data...done.
Zone: 16 name: SYMM type: symmetry. Reading zone data...done.
Zone: 17 name: SYMM02 type: symmetry. Reading zone data...done.
Zone: 18 name: SYMM03 type: symmetry. Reading zone data...done.
Zone: 19 name: GROUND type: wall. Reading zone data...done.
Zone: 20 name: CARBODY type: wall. Reading zone data...done.

FINISHED LEXING

--> FOAM Warning :
From function boundBox::boundBox(const pointField& points)
in file meshes/boundBox/boundBox.C at line 52
cannot find bounding box for zero sized pointFieldreturning zero
Creating patch 0 for zone: 14 name: INLET type: velocity-inlet
Creating patch 1 for zone: 15 name: OUTLET type: pressure-outlet
Creating patch 2 for zone: 16 name: SYMM type: symmetry
Creating patch 3 for zone: 17 name: SYMM02 type: symmetry
Creating patch 4 for zone: 18 name: SYMM03 type: symmetry
Creating patch 5 for zone: 19 name: GROUND type: wall
Creating patch 6 for zone: 20 name: CARBODY type: wall
Creating cellZone 0 name: BODY type: fluid
patch 0 from Fluent indices: 395704 to: 395747 type: velocity-inlet
patch 1 from Fluent indices: 395748 to: 395786 type: pressure-outlet
patch 2 from Fluent indices: 395787 to: 399056 type: symmetry
patch 3 from Fluent indices: 399057 to: 399289 type: symmetry
patch 4 from Fluent indices: 399290 to: 399497 type: symmetry
patch 5 from Fluent indices: 399498 to: 401062 type: wall
patch 6 from Fluent indices: 401063 to: 408735 type: wall

Writing mesh to "/home/vuns/OpenFOAM/vuns-1.4.1/run/BluntBody/test//PotentialBB01/constant/regio n0"

End


Not sure if it will cause a problem or not down the track?

Thanks

Simon.
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Old   February 27, 2008, 03:03
Default Don't think that is a problem.
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Don't think that is a problem. Might be a region with zero faces in it. Run

checkMesh -allTopology -allGeometry

to see whether there is a problem.
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Old   May 5, 2008, 21:14
Default I have experienced a similar e
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Ryan Middleton
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I have experienced a similar error with fluent3DMeshToFoam:

FINISHED LEXING

--> FOAM Warning :
From function boundBox::boundBox(const pointField& points)
in file meshes/boundBox/boundBox.C at line 52
cannot find bounding box for zero sized pointFieldreturning zero
Creating patch 0 for zone: 3 name: Wingbottom type: wall
Creating patch 1 for zone: 4 name: Wingtop type: wall
Creating patch 2 for zone: 5 name: Wingtip type: wall
Creating patch 3 for zone: 6 name: Elevatortop type: wall
Creating patch 4 for zone: 7 name: Elevatorbottom type: wall
Creating patch 5 for zone: 8 name: Elevatorside type: wall
Creating patch 6 for zone: 9 name: Stubwingside type: wall
Creating patch 7 for zone: 10 name: Stubwingbottom type: wall
Creating patch 8 for zone: 11 name: Stubwingtop type: wall
Creating patch 9 for zone: 12 name: Rudder type: wall
Creating patch 10 for zone: 13 name: Floatpack type: wall
Creating patch 11 for zone: 14 name: Fuselage type: wall
Creating patch 12 for zone: 15 name: Bottomnose type: wall
Creating patch 13 for zone: 16 name: Topnose type: wall
Creating patch 14 for zone: 17 name: Symwall type: symmetry
Creating patch 15 for zone: 18 name: Bottomwall type: wall
Creating patch 16 for zone: 19 name: Topwall type: wall
Creating patch 17 for zone: 20 name: Sidewall type: wall
Creating patch 18 for zone: 21 name: Outlet type: pressure-outlet
Creating patch 19 for zone: 22 name: Inlet type: velocity-inlet
Creating cellZone 0 name: fluid type: fluid
patch 0 from Fluent indices: 0 to: 74094 type: wall
patch 1 from Fluent indices: 74095 to: 147814 type: wall
patch 2 from Fluent indices: 147815 to: 156374 type: wall
patch 3 from Fluent indices: 156375 to: 171950 type: wall
patch 4 from Fluent indices: 171951 to: 187454 type: wall
patch 5 from Fluent indices: 187455 to: 187730 type: wall
patch 6 from Fluent indices: 187731 to: 193600 type: wall
patch 7 from Fluent indices: 193601 to: 226482 type: wall
patch 8 from Fluent indices: 226483 to: 256634 type: wall
patch 9 from Fluent indices: 256635 to: 288315 type: wall
patch 10 from Fluent indices: 288316 to: 357419 type: wall
patch 11 from Fluent indices: 357420 to: 490004 type: wall
patch 12 from Fluent indices: 490005 to: 498824 type: wall
patch 13 from Fluent indices: 498825 to: 532124 type: wall
patch 14 from Fluent indices: 532125 to: 679769 type: symmetry
patch 15 from Fluent indices: 679770 to: 687631 type: wall
patch 16 from Fluent indices: 687632 to: 695591 type: wall
patch 17 from Fluent indices: 695592 to: 700623 type: wall
patch 18 from Fluent indices: 700624 to: 701969 type: pressure-outlet
patch 19 from Fluent indices: 701970 to: 705957 type: velocity-inlet


--> FOAM FATAL ERROR : Face 19175673 contains vertex labels out of range: 3(10254 0 17727361) Max point index = 5798594#0 Foam::error::printStack(Foam:stream&) in "/home/a1099275/OpenFOAM/OpenFOAM-1.4.1/lib/linux64GccDPOpt/libOpenFOAM.so"
#1 Foam::error::abort() in "/home/a1099275/OpenFOAM/OpenFOAM-1.4.1/lib/linux64GccDPOpt/libOpenFOAM.so"
#2 Foam::polyMesh::resetPrimitives(int, Foam::Field<foam::vector<double> > const&, Foam::List<foam::face> const&, Foam::List<int> const&, Foam::List<int> const&, Foam::List<int> const&, Foam::List<int> const&, bool) in "/home/a1099275/OpenFOAM/OpenFOAM-1.4.1/lib/linux64GccDPOpt/libOpenFOAM.so"
#3 Foam::polyTopoChange::changeMesh(Foam::polyMesh&, bool, bool) in "/home/a1099275/OpenFOAM/OpenFOAM-1.4.1/lib/linux64GccDPOpt/libdynamicMesh.so"
#4 main in "/home/a1099275/OpenFOAM/OpenFOAM-1.4.1/applications/bin/linux64GccDPOpt/fluent3 DMeshToFoam"
#5 __libc_start_main in "/lib64/libc.so.6"
#6 __gxx_personality_v0 in "/home/a1099275/OpenFOAM/OpenFOAM-1.4.1/applications/bin/linux64GccDPOpt/fluent3 DMeshToFoam"


From function polyMesh::polyMesh::resetPrimitives
(
const label nUsedFaces,
const pointField& points,
const faceList& faces,
const labelList& owner,
const labelList& neighbour,
const labelList& patchSizes,
const labelList& patchStarts
)

in file meshes/polyMesh/polyMesh.C at line 670.

FOAM aborting

No polyMesh folder was created. Any ideas about the problem?

Thanks very much for any help.

Ryan
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Old   November 14, 2008, 08:31
Default hi Foamers.. I am having a li
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hi Foamers..
I am having a little problem with fluent3DMeshToFoam.

This the error I am getting..

Exec : fluent3DMeshToFoam disk_imp_14nov.msh
Date : Nov 14 2008
Time : 19:05:27
Host : linux
PID : 18173
Case : /home/ms.wankhede/OpenFOAM/ms.wankhede-1.5/CFD_Projects/disk_trial
nProcs : 1

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



Do not understand characters:

From function fluentMeshToFoam::lexer
in file fluent3DMeshToFoam.L at line 708.

FOAM exiting

How can i get rid of it?

Regards,
Mahendra.
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Old   November 14, 2008, 09:43
Default Did you export your mesh ascii
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Hrvoje Jasak
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Did you export your mesh ascii?

Hrv
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Old   November 14, 2008, 23:24
Default hello Hrvoje, I exported th
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Mahendra
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hello Hrvoje,

I exported the mesh with default settings in Gambit. Just now i checked it shows format as dos.

Regards,
Mahendra.
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Old   November 15, 2008, 01:18
Default Dear Hrvoje Hi ! Now my mes
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Dear Hrvoje Hi !

Now my mesh in the ascii format works with OpenFOAM.
Also all the internal walls are recognised as walls by OpenFOAM and i do not need to use <splitmesh>.

Thanks and Regards,
Mahendra.
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Old   January 20, 2009, 07:26
Default hello, I have some trouble
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Pawel Sosnowski
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hello,

I have some trouble with importing mesh file written in fluent format *.msh.
First, I took the mesh and used dos2unix utility on it (since it was created under Win). After that I used fluent3DMeshToFoam. The only unxepected message during this work was:

--> FOAM Warning :
From function boundBox::boundBox(const pointField& points)
in file meshes/boundBox/boundBox.C at line 52
Cannot find bounding box for zero sized pointField, returning zero

Anyway, the mesh was written. I tried to take a look at it in paraView. I could find the declared patches in "Region Status" field but every time I chose any of them and tried to update, the paraView dumped with "Segmentation Fault" message. I run the "checkMesh -allTopology -allGeometry" and got those results:

Mesh stats
points: 132745
#0 Foam::error::printStack(Foam:stream&) in "/home/pawel/OpenFOAM/OpenFOAM-1.5/lib/linuxGccDPOpt/libOpenFOAM.so"
#1 Foam::sigSegv::sigSegvHandler(int) in "/home/pawel/OpenFOAM/OpenFOAM-1.5/lib/linuxGccDPOpt/libOpenFOAM.so"
#2 Uninterpreted: [0xb7f49420]
#3 Foam::primitiveMesh::calcCells(Foam::List<foam::ce ll>&, Foam::UList<int> const&, Foam::UList<int> const&, int) in "/home/pawel/OpenFOAM/OpenFOAM-1.5/lib/linuxGccDPOpt/libOpenFOAM.so"
#4 Foam::primitiveMesh::calcCells() const in "/home/pawel/OpenFOAM/OpenFOAM-1.5/lib/linuxGccDPOpt/libOpenFOAM.so"
#5 Foam::primitiveMesh::cells() const in "/home/pawel/OpenFOAM/OpenFOAM-1.5/lib/linuxGccDPOpt/libOpenFOAM.so"
#6 Foam::printMeshStats(Foam::polyMesh const&, bool) in "/home/pawel/OpenFOAM/OpenFOAM-1.5/applications/bin/linuxGccDPOpt/checkMesh"
#7 main in "/home/pawel/OpenFOAM/OpenFOAM-1.5/applications/bin/linuxGccDPOpt/checkMesh"
#8 __libc_start_main in "/lib/tls/i686/cmov/libc.so.6"
#9 Foam::regIOobject::readIfModified() in "/home/pawel/OpenFOAM/OpenFOAM-1.5/applications/bin/linuxGccDPOpt/checkMesh"
Segmentation fault

can you help me understand what is wrong?

Regards,
Pawel
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Old   February 2, 2009, 04:14
Default Hi Hrvoje Jasak sir i
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Hi Hrvoje Jasak sir


i am new to openFoam so can you help me to convert fluentMeshToopenfoam
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Old   February 2, 2009, 08:48
Default Sure: - save the case from
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Hrvoje Jasak
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Sure:

- save the case from Fluent in ASCII format
- leave it for me on an ftp server

and I'll pick it up and convert it.

Please let me know where to pick up the case.

Hrv
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Old   February 3, 2009, 00:50
Default Simon Vun sir my problem
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Simon Vun sir

my problem is that i hav done the naca 0012 airfoil case in gambit and i solved in fluent 6.3 ...now i want to compare these results in openfoam 1.4.1..now i need to import to fluentMeshTofoam in openfoam 1.4.1..i am facing problem for converting fluentMeshTofoam ...i hav created the mesh file using gambit and i used windows for importing..can u tell me how to import cas file from dosTounix to be used in opeenfoam...
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Old   February 6, 2009, 09:58
Default I have added a page to wiki. M
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I have added a page to wiki. Maybe it will help you to solve your case.

However it is for OF-1.5 and with a different converter. Note: its a procedure for .msh file, so only mesh can be imported and you will have to do the tweaking yourself.

-Rishi

PS: I would request/recommend you to first read the forums and wiki before jumping into any thread and asking fundamental questions, that have been answered a few times.
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Old   February 6, 2009, 09:58
Default sorry I forgot the wiki link:
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sorry I forgot the wiki link:
http://openfoamwiki.net/index.php/Fluent3DMeshToFoam
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Old   February 11, 2009, 12:07
Default hello, since my last post (
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Pawel Sosnowski
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hello,

since my last post ( http://www.cfd-online.com/cgi-bin/Op...0910#POST30910 ), I tried to find some way of getting the mesh. Unfortunately I failed.
Any hint how to overcome this problem will be great.
Thanks in advantage.
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Old   April 15, 2009, 10:58
Default
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Dr. Alexander Vakhrushev
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Hi all!

I converted 3D FLUENT mesh to OpenFOAM format. It has 6 interface patches. So they are saved as type wall. But actually they are just interfaces between to regions of simulation area.
Would you please point me, how to exclude those patches from mesh, so one should not set boundary conditions for them?

Thank you in advance!
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Old   April 15, 2009, 12:02
Default
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Hmm..!!

Found, that previously in OF v1.3 fluentMeshToFoam http://openfoamwiki.net/index.php/Im...ith_interfaces saved FLUENT mesh keeping interface patches. And it was possible to treat that patches by yourself with stitchMesh. Is it available in OF v1.5, because it just combines all interfaces into default wall...
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Simulation and Modelling of Metallurgical Processes
Department of Metallurgy
University of Leoben

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Old   June 22, 2009, 03:14
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Hi,

I've got a valid 1.5-mesh and need to transform it into 1.4.1... Therefore I use foamMeshToFluent and after that fluent3DMeshToFoam.
In 1.5 both works. In 1.4.1-dev it reports (after lexing):

FOAM FATAL ERROR: attempt to access element from zero sized list...

Thats not fine... Any ideas???
Marco
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Old   September 8, 2009, 08:13
Default fluent3DMeshToFoam
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hi all,
i want to convert my .msh file to FOAM format on OpenFOAM-1.5,but when i use the fluent3DMeshToFoam,i have some question,would you please give me some advice?
before i used fluent3DMeshToFoam,i have used the dos2unix,but an unexpected error has been occured as follows:
Exec : fluent3DMeshToFoam voim2.msh -scale 0.001
Date : Sep 08 2009
Time : 17:17:23
Host : linux-pw3p
PID : 7618
Case : /home/ry/OpenFOAM/ry-1.5/tutorials/MRFSimpleFoam/voim/mixerVessel2D
nProcs : 1

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

Dimension of grid: 3
Number of points: 80727
PointGroup: 1 start: 0 end: 80726. Reading points...done.
--> FOAM Warning : Found unknown block of type: "13"
--> FOAM Warning : Found unknown block of type: "13"
Number of cells: 385309
CellGroup: 2 start: 0 end: 278416 type: 1
CellGroup: 3 start: 278417 end: 385308 type: 1
Zone: 2 name: rotor type: fluid. Reading zone data...done.
Zone: 3 name: stator type: fluid. Reading zone data...done.
Zone: 4 name: wall type: wall. Reading zone data...done.
Zone: 5 name: interface.4 type: interface. Reading zone data...done.
Zone: 6 name: interface.3 type: interface. Reading zone data...done.
Zone: 7 name: pressure_outlet.2 type: pressure-outlet. Reading zone data...done.
Zone: 8 name: inlet type: velocity-inlet. Reading zone data...done.
Zone: 10 name: default-interior type: interior. Reading zone data...done.

FINISHED LEXING

--> FOAM Warning :
From function boundBox::boundBox(const pointField& points)
in file meshes/boundBox/boundBox.C at line 52
Cannot find bounding box for zero sized pointField, returning zero
Creating cellZone 0 name: rotor type: fluid
Creating cellZone 1 name: stator type: fluid
#0 Foam::error:rintStack(Foam::Ostream&) in "/home/ry/OpenFOAM/OpenFOAM-1.5/lib/linuxGccDPOpt/libOpenFOAM.so"
#1 Foam::sigSegv::sigSegvHandler(int) in "/home/ry/OpenFOAM/OpenFOAM-1.5/lib/linuxGccDPOpt/libOpenFOAM.so"
#2 Uninterpreted: [0xffffe420]
#3 Foam:olyTopoChange::getFaceOrder(int, Foam::List<int> const&, Foam::List<int> const&, Foam::List<int>&, Foam::List<int>&, Foam::List<int>&) const in "/home/ry/OpenFOAM/OpenFOAM-1.5/lib/linuxGccDPOpt/libdynamicMesh.so"
#4 Foam:olyTopoChange::compact(bool, bool, int&, Foam::List<int>&, Foam::List<int>&) in "/home/ry/OpenFOAM/OpenFOAM-1.5/lib/linuxGccDPOpt/libdynamicMesh.so"
#5 Foam:olyTopoChange::compactAndReorder(Foam:oly Mesh const&, bool, bool, bool, int&, Foam::Field<Foam::Vector<double> >&, Foam::List<int>&, Foam::List<int>&,
what can i do ?
regards
jennifer
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