CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM Running, Solving & CFD

axisymetric problem with a wedge mesh

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

Reply
 
LinkBack Thread Tools Display Modes
Old   March 6, 2012, 07:02
Default axisymetric problem with a wedge mesh
  #1
Member
 
Mat
Join Date: Jan 2012
Posts: 39
Rep Power: 5
Mat_fr is on a distinguished road
Dear all,

I wish to simulate an axisymmetric incompressible flow in a pipe (using simpleFoam and the standard k-eps model).
So, I created a wedge mesh in gambit and defined the different BC, as walls, inlet, outlet, and the two faces "front" and "back" of the wedge.
In the polyMesh/boundary file, I specified the wedge type for front and back. And I did the same for the physical variables at time 0.

However, when I'm running the simulation, I get the following error :

Quote:
Create time

Create mesh for time = 0

#0 Foam::error:: printStack(Foam::Ostream&) in "/***/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#1 Foam::sigFpe::sigHandler(int) in "/***/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#2
at sigaction.c:0
#3 Foam::wedgePolyPatch::initTransforms() in "/***/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#4 Foam::wedgePolyPatch::wedgePolyPatch(Foam::word const&, Foam::dictionary const&, int, Foam::PolyBoundaryMesh const&) in "/***/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#5 Foam::PolyPatch::adddictionaryConstructorToTable<F oam::wedgePolyPatch>::New(Foam::word const&, Foam::dictionary const&, int, Foam::PolyBoundaryMesh const&) in "/***/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#6 Foam::PolyPatch::New(Foam::word const&, Foam::dictionary const&, int, Foam::PolyBoundaryMesh const&) in "/***/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#7 Foam::PolyBoundaryMesh::PolyBoundaryMesh(Foam::IOo bject const&, Foam::PolyMesh const&) in "/***/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#8 Foam::PolyMesh::PolyMesh(Foam::IOobject const&) in "/***/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#9 Foam::fvMesh::fvMesh(Foam::IOobject const&) in "/***/platforms/linux64GccDPOpt/lib/libfiniteVolume.so"
#10
in "/software/oss/OpenFOAM/OpenFOAM-2.0.1/platforms/linux64GccDPOpt/bin/simpleFoam"
#11 __libc_start_main in "/lib64/libc.so.6"
#12
in "/software/oss/OpenFOAM/OpenFOAM-2.0.1/platforms/linux64GccDPOpt/bin/simpleFoam"
Floating point exception (core dumped)
I check the tutorial OpenFOAM-2.0.1/tutorials/incompressible/pimpleDyMFoam/movingCone, and one can see that the axis of symmetry is also specified in the BC. Is it necessary ? I don't think so. Anyway I've defined it in Gambit, but when I'm using fluent3DMeshToFoam the axis is not created in the boundary file.
Does somebody has an idea ?

Thank you for your help !

Mat

ps :
* I'm not sure if my thread is in the good forum, but as I don't know the reason of my error...

Last edited by Mat_fr; March 7, 2012 at 05:17.
Mat_fr is online now   Reply With Quote

Old   March 7, 2012, 05:18
Default
  #2
Member
 
Mat
Join Date: Jan 2012
Posts: 39
Rep Power: 5
Mat_fr is on a distinguished road
For information, when I'm using symmetryPlane boundary conditions, instead of wedge, with the same mesh, the computation starts. But in this case the calculation diverges (which seems logical)

Best,

Mat
Mat_fr is online now   Reply With Quote

Old   March 8, 2012, 12:35
Default
  #3
Member
 
Mat
Join Date: Jan 2012
Posts: 39
Rep Power: 5
Mat_fr is on a distinguished road
I finally found the solution of my problem, here:
http://www.ltengsoft.com/node/10

It was something quite tricky. One must take care of the mesh position in the space.


Mat
Mat_fr is online now   Reply With Quote

Reply

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
snappyHexMesh won't work - zeros everywhere! sc298 OpenFOAM Native Meshers: snappyHexMesh and Others 2 March 27, 2011 21:11
[ICEM] problem of Non-concidence mesh jeevankumarb ANSYS Meshing & Geometry 1 March 4, 2011 09:47
problem when converting mesh (made by ICEM) using fluentMeshToFoam Forrest_Lei OpenFOAM 11 October 16, 2009 06:28
The problem with GAMBIT - using two mesh sizes. Owen FLUENT 2 June 22, 2005 05:16
Gambit problems Althea FLUENT 21 February 6, 2001 08:05


All times are GMT -4. The time now is 11:19.