[gharika90]

hi !
i am trying to make an unstructured grid in icem cfd with two fluid zones. but all the time i am getting geometry hole error.
kindly help me

[yonchong]

There are a number of reasons why it could happen so it would be helpful if you post the screenshot.

By the way, how did the geometry created and imported into ICEM? I found that the Parasolid format gives me the least problems in terms of surface gap.

Also if you have curved surface check your model tolerance. Settings -> Model/Units -> Triangulation. If the tolerance is bigger than your small feature, ICEM will struggle to fit any cell there and you could have strange results.

[gharika90]

yeah i have imported the geometry from parasolid file ... the actual problem is i am trying to make grid for virtual blade model where i have to give to fluid zones .. i was trying it by creating to two volumes and as i have mentioned am getting the mesh hole error...
and then i have tried to extrude mesh for the disc but still on importing it in fluent the disc region is not automatically changed to wall zone instead of interior ..... help help !!!

[yonchong]

Originally Posted by gharika90

i was trying it by creating to two volumes and as i have mentioned am getting the mesh hole error...

Did you try the thin cut option? The option is used when two surface are meeting at a thin cut angle, like you have. Also, manually fix the surface shell is one option. Have you try either methods before?

Originally Posted by gharika90

the disc region is not automatically changed to wall zone instead of interior ..... help help !!!

So you want interior wall instead of wall or is it the other way around? You can change boundary type from wall zone to interior or interior to wall in Fluent but the volume mesh need to make sense. Wall boundary condition has only one side cell attached and interior has both side.