How to use Hexahedral mesh ?

[Fabien852]

Hello,

I wish to use gas combustion module and I have to make volume with hexahedral mesh to do it well.
I don't know why but hexahedral mesh works only with cubes in Salome.

Do you know how use it with a cylinder for example ?

I attached the model that I wish to mesh for use the combustion module.


Best regards,


Fabien

[Yvan Fournier]

Hello,

You may find more help regarding SALOME on the SALOME forum (http://www.salome-platform.org), but to build an "IJK" hexahedral mesh on a cylinder, you will need to subdivide it into several pieced and build an "O-grid" (I don't have an image immediately available, but you can Google for "o-grid" to obtain several pictures).

There is also an experimental block mesh module in SALOME 6.4, but I have never tested it. You may also try the new "body-fitting" algorithm in SALOME.

Best regards,

Yvan

[Fabien852]

Hello,

Thank you, I installed the last version of Salome and i tried to use the body-fitting algorithm,
it works pretty well but i don't know how to assign boundary conditions on faces with this algorithm.

You know how ?


Fabien

[Martin Isack]

Hello Fabien,

please have a look in the Salome forum. I asked the same question a view days ago.
http://salome-platform.org/forum/forum_9/206627896

Regards,

Maritn

[Fabien852]

Hello,

Thank you, it works but I use the manual way to make boundary faces with "Standalon Group",
Do you succeed to make boundary faces in mesh module from geometry module ?

Best regards,


Fabien

[Yvan Fournier]

Hello,

Yes, I often build "groups from geometry". To do this, I usually need to use "new entity -> explode" to build sub elements (i.e. surfaces for a volume) first, and build groups on those.

Regards,

Yvan

[Fabien852]

I tried to do this but it doesn't works with Body fitting algorithm.

You have really use it with this algorithm ?


Fabien