[Alessio_1985]

Hi,
I'm a new user of SnappyHexMesh of OpenFoam for mesh.
I'm trying to test the capability of this tool and compare it with other software for meshing, so I tried to use very simple geometries like cube, cilinder...
I used first the blockMesh tool, then the snappyhexMesh tool and after that I have tested the grid with checkMesh and no problem was shown, but opening the grid with ParaFOAM I see same strange thing in the grid, if I do same sections view.
You can look it in the picture attached.
I have tried to change settings in my snappyHexMeshdict file but the problem doesn't stop.
Is it a visualization issues or a grid probrem?

I attacched also my blockMesh and snappyHexMeshDict file.
thanks

[sail]

it is a visualization error typical of paraview.

your cells are not thetraedal but made of "bricks"

[Alessio_1985]

Thanks for the answer,
how can I fix this visualization problem?

And another question, when i try to convert the mesh from OF to fluent I obtain the messege below:

" FOAM Warning :
From function void fluentFvMesh::writeFluentMesh() const
in file fluentFvMesh.C at line 252
foamMeshToFluent: cell shape for cell 241613 only supported by Fluent polyhedral meshes.
Suppressing any further messages for polyhedral cells. "

but the mesh is genereted anyway, the suppression of the polyhedral cells can modify my results ?
How can I avoid having polyhedral cells in the mesh?

[olesen]

Originally Posted by Alessio_1985

Thanks for the answer,
how can I fix this visualization problem?

And another question, when i try to convert the mesh from OF to fluent I obtain the messege below:

" FOAM Warning :
From function void fluentFvMesh::writeFluentMesh() const
in file fluentFvMesh.C at line 252
foamMeshToFluent: cell shape for cell 241613 only supported by Fluent polyhedral meshes.
Suppressing any further messages for polyhedral cells. "

but the mesh is genereted anyway, the suppression of the polyhedral cells can modify my results ?
How can I avoid having polyhedral cells in the mesh?

Older FLUENT versions did not support polyhedrals. Assuming your version of FLUENT does support polyhedrals, you can just ignore the warning.

[sail]

Originally Posted by Alessio_1985

Thanks for the answer,
how can I fix this visualization problem?

there was a thread about that, once upon a time, somewhere in the forum. but i'm afraid I don't remember where... i'm just used to it and don't notice anymore.

--edit: my google-fu is batter than i expected, here is the link, try to read the last two messages, Bruno, one of our most prolific forum members, tell you haw to do it! http://www.cfd-online.com/Forums/ope...-parafoam.html

Originally Posted by Alessio_1985

And another question, when i try to convert the mesh from OF to fluent I obtain the messege below:

-cut-

don't know, sorry