Personal tools
You are here: Home Forum How to use Salome? HexMesh

HexMesh

Up to How to use Salome?

HexMesh

Posted by Tobias Holzmann at April 20. 2012

Hi all together,

I am using Salome for over one year now and now I have a question :)
Well I make simple geometry meshing with salome for using them in OpenFOAM.
Usually I export the mesh to the *.unv mesh file type and everything works very fine.


So now my question is.
How can I manage it to create separate hexMesh regions without errors ? 


example (picture):

the picture shows my recent geometry.
I wanna mesh the inside (quad) with 4 cells and the ogrid around with more cells ...
If I compute it now i get errors:

Unexpected geometry
Invalid input ...

Is it possible in gernal to build such a mesh!?
Tobi

Attachments

Re: HexMesh

Posted by Tobias Holzmann at April 20. 2012

Well additional info for clearness,

i can make the ogrid very fine but if I do that, I get extrem fine cells in the middle of the geometry and that is not what I want.
Just 2 - 4 cells in the geometry center and at the o grid may be 50.
Hope its clear what I mean

Re: HexMesh

Posted by Saint Michael at April 20. 2012

Hi Tobi,

So you want to get 4 polyhedrons in the center, am I right?

St.Michael

Re: HexMesh

Posted by Tobias Holzmann at May 04. 2012

Yes you `re right.
I just wanna have 4 polyhedrons in the center.

 

Previously Saint Michael wrote:

Hi Tobi,

So you want to get 4 polyhedrons in the center, am I right?

St.Michael

 

 

Re: HexMesh

Posted by Saint Michael at May 05. 2012

Hi Tobi,

after computing the rest mesh, you can manually create 4 polygons at the center bottom and extrude them into polyhedrons. Then you also need to merge equal nodes and elements.

Note that UNV format doesn't support polygons and polyhedrons.

St.Michael

Powered by Ploneboard
Document Actions