Meshing problem

macatu · June 18, 2014, 08:17

Hello everyone,

I imported a .cas file from fluent to remesh it on starccm+ and work with it. The imported file opens and just contains regions (no geometry parts), a volume mesh that I want to delete and re-do and that's it.
The problem comes when I execute the mesher, I set it with values I think are reasonable and when it starts meshing the error "no surface representation marked as starting surface" pops.
I don't really know what to do, I traid using the clear generated mesh option, but the error pops anyways.
Can somebody tell me what is it that I'm doing wrong?

Thank you very much.

kguntur · June 18, 2014, 08:40

Looks like you do not have any surface representations. Check this under the "representations" in the starccm+ tree.

You need to have a surface representation to generate the volume mesh. I think (and I am not sure) the case file in fluent has only a volume representation.

You could right click on the "volume mesh" and "extract boundary surface". This will generate a surface representation based on the existing volume mesh. I would not recommend this method as I don't get great surface this way.

The best option is to import the surface as a stl or dbs or something.

Hope this helps.

macatu · June 18, 2014, 08:58

Quote:

Originally Posted by kguntur

Looks like you do not have any surface representations. Check this under the "representations" in the starccm+ tree.

You need to have a surface representation to generate the volume mesh. I think (and I am not sure) the case file in fluent has only a volume representation.

You could right click on the "volume mesh" and "extract boundary surface". This will generate a surface representation based on the existing volume mesh. I would not recommend this method as I don't get great surface this way.

The best option is to import the surface as a stl or dbs or something.

Hope this helps.

Thank you, you are right, there is no surface representation, I'll ask my tutor if I can import the surface from fluent, but I'm not very sure of it since I just have this .cas file and nothing more.

Regards

June 18, 2014, 08:17	Meshing problem	#1
macatu New Member Join Date: Apr 2014 Location: Spain Posts: 2 Rep Power: 0	Hello everyone, I imported a .cas file from fluent to remesh it on starccm+ and work with it. The imported file opens and just contains regions (no geometry parts), a volume mesh that I want to delete and re-do and that's it. The problem comes when I execute the mesher, I set it with values I think are reasonable and when it starts meshing the error "no surface representation marked as starting surface" pops. I don't really know what to do, I traid using the clear generated mesh option, but the error pops anyways. Can somebody tell me what is it that I'm doing wrong? Thank you very much.

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June 18, 2014, 08:40		#2
kguntur Member kris Join Date: May 2014 Posts: 73 Rep Power: 11	Looks like you do not have any surface representations. Check this under the "representations" in the starccm+ tree. You need to have a surface representation to generate the volume mesh. I think (and I am not sure) the case file in fluent has only a volume representation. You could right click on the "volume mesh" and "extract boundary surface". This will generate a surface representation based on the existing volume mesh. I would not recommend this method as I don't get great surface this way. The best option is to import the surface as a stl or dbs or something. Hope this helps.