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-   -   Import fluent mesh (

rengu October 24, 2007 04:48

Hi everybody i would like t
Hi everybody

i would like to import to OpenFOAM a mesh i've got in Fluent.
But i can only export Mesh to Ensight Case Gold,Fieldview Unstructured for 3d mesh
i can't export to 3D.msh ,only to 2D.msh for boundary and i don't know why
i can only export to this formats because there are polyhedral data
and if it's possible,will i get boundary conditions?
Anyone got an idea?

best regards

gabriel October 24, 2007 07:46

If I understand right, you don
If I understand right, you don't have the fluent.msh file in ascii?

rengu October 24, 2007 07:53

no i only have .fvuns format
i only have .fvuns format fieldview and .case and .geo format ensight

gabriel October 24, 2007 08:03

Do you have ICEM, can you read
Do you have ICEM, can you read those formats into ICEM?

Sorry, but i usually write out a mesh from ICEM in Fluent format and then use fluentMeshToFoam or now new fluent3DMeshToFoam.



rengu October 24, 2007 08:09

no i don't have ICEM,i only go
no i don't have ICEM,i only got fluent but i can't write .msh file

thank regards

gabriel October 24, 2007 08:11

Sorry, no idea :-(
Sorry, no idea :-(

hjasak October 24, 2007 08:14

Write the .cas file in ascii f
Write the .cas file in ascii format and feed that into fluemtMeshToFoam. .msh file is a subset of the .cas but both should work fine with the converter I wrote.



olesen October 24, 2007 08:18

If your EnSight geo file is AS
If your EnSight geo file is ASCII, it would be "fairly" easy (for you) to transform this into another ASCII mesh format.
The EnSight binary format would be more annoying.

rengu October 24, 2007 09:26

My file is ensight binary i
My file is ensight binary

i have writes a .cas file with fluent and convert it with fluent3DTofoam
i remove data unnecessary about the case that it don't recognyze and now i think it work
i can see my mesh in paraFoam

thanks a lot
best regards

soufy January 8, 2008 17:27

Hi everybody, i would like
Hi everybody,

i would like to import to OpenFOAM a mesh that i have got in Fluent.
my file is in extetion .msh, i write the command ligne of fluemtMeshToFoam that's described in user's guide . by always i have problems. please i need a help to result this problem.

Where exactly i have to put the file .msh?

thanks a lot

asaha January 9, 2008 00:20

have you tried fluent3DMeshtoF
have you tried fluent3DMeshtoFoam and checked.

caw January 9, 2008 02:41

some important notes: - wri
some important notes:

- write your fluent mesh as ascii (not binary. uncheck this in tgrid for export)!
- if you did that under windows you have to use dos2unix on that file
- as mentioned above, use fluent3DMeshtoFoam


danielle August 29, 2008 20:53

I need to know what you think
I need to know what you think about my mesh. because I got the
good result by Fluent but don't work with O.F (very BAD

Create time

Create polyMesh for time = constant

Time = constant

Mesh stats
points: 314704
edges: 1088715
faces: 1277556
internal faces: 1211202
cells: 492171
boundary patches: 13
point zones: 0
face zones: 0
cell zones: 2

Number of cells of each type:
hexahedra: 257595
prisms: 0
wedges: 0
pyramids: 4884
tet wedges: 0
tetrahedra: 229692
polyhedra: 0

Checking topology...
Boundary definition OK.
Point usage OK.
Upper triangular ordering OK.
Topological cell zip-up check OK.
Face vertices OK.
Number of identical duplicate faces (baffle faces): 11380
Face-face connectivity OK.
Number of regions: 1 (OK).

Checking patch topology for multiply connected surfaces ...
Patch Faces Points Surface
wall_cylin_int_Pied 22752 10349 multiply connected surface (shared edge)
wall_cylin_ext_G 8448 8624 ok (not multiply connected)
wall_capt_inlet_G 960 980 ok (not multiply connected)
inlet3 142 76 ok (not multiply connected)
inlet2 140 75 ok (not multiply connected)
outlet 25 33 ok (not multiply connected)
Wall_top 2653 2755 ok (not multiply connected)
inlet1 78 43 ok (not multiply connected)
wall_buttom 2669 1406 ok (not multiply connected)
wal_capt_inlet_F 873 685 ok (not multiply connected)
wall_cylin_inter 809 420 multiply connected surface (shared edge)
wall_cylin_ext_F 24925 19277 ok (not multiply connected)
wall_disc_inlet 1880 949 ok (not multiply connected)
<<Writing 10349 conflicting points to set nonManifoldPoints

Checking geometry...
Domain bounding box: (-0.139998 -0.139998 -8.61533e-16) (0.139998 0.139997 0.99)
Boundary openness (-1.08376e-17 2.8904e-17 -1.39722e-16) OK.
Max cell openness = 1.66038e-15 OK.
Max aspect ratio = 21.4331 OK.
Minumum face area = 1.22452e-07. Maximum face area = 8.99153e-05. Face area magnitudes OK.
Min volume = 2.74672e-11. Max volume = 2.55601e-07. Total volume = 0.0347228. Cell volumes OK.
Mesh non-orthogonality Max: 84.9996 average: 12.6589
*Number of severely non-orthogonal faces: 49.
Non-orthogonality check OK.
<<Writing 49 non-orthogonal faces to set nonOrthoFaces
Face pyramids OK.
Max skewness = 1.33507 OK.
Min/max edge length = 0.000218421 0.0171268 OK.
All angles in faces OK.
Face flatness (1 = flat, 0 = butterfly) : average = 1 min = 0.995346
All face flatness OK.

Mesh OK.


ali805509 June 1, 2010 15:32

Hi everyone,

I imported my mesh file to a FOAM mesh successfully using fluentMeshToFoam command.
I was wondering if there is any way to visualize the mesh file using Paraview. The problem I have is that after converting the mesh, blockMeshDict is not generated (all the other files like points and boundary are generated though) and therefore, bolckMesh command does not work.

Tarak October 10, 2010 23:48

fluentmesh to foam
hii Ali,

I think the BlockmeshDict file is for writing the code to generate the grids. But since have already generated the grid using other grid generator, blockmesh is not needed.

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