[jpesich]

I have been importing a .igs file as a new region. The part is made up of around 800 separate bodies so I don't bother importing it as a new part. I build a wind tunnel around it in the 3D CAD Modeling.

Before I generate a volume mesh, I display the mesh and the part seems to already have a mesh on it. When I generate a volume mesh (surface remesher and polyhedral) the output says that no cell/vertices/faces were created on the part but rather only in the wind tunnel.

How do I mesh this part?! Does it have to be a surface wrapper?


Edit: Found this tutorial on surface meshing and it is great! https://www.youtube.com/watch?v=OGIYYLziZWI

[ggulgulia]

Hello Justin

When importing a file in neutral format, CCM+ tesslates the geometry by itself. This is very coarse and rather a bad mesh which CCM+ cannot volume mesh. You need to create mesh models and remesh the surface appropriately. If you are using one mesh continua for multiple regions make sure that you enable "per region meshing"

I would suggest you to avoid wrapper to as much extent as possible.

[ping]

it is silly to import directly into regions with the modern versions of star-ccm+ especially with that many parts

you should import into parts

and unless you have extremely good quality cad with that number of parts you probably do need to wrap to get a closed surface for the internal shape

and that is another reason to use parts based meshing since wrapping is much better up there

then make a region out of the wrapped surface and the wind tunnel part
then create an automatic mesh operation to surface mesh and volume mesh

do the racing car tutorial in the meshing section