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Old   January 31, 2008, 10:56
Default copy mesh
  #1
spillo
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Hello guys,

I have got this problem: i built a mesh of 700 000 nodes in ICEM, for one blade of my turbomachinary. After i import it in CFXpre and i wanna to transform it to get the mesh for all the blades of my machine, that are 26. So i right click on mesh and i click transform mesh, FULL CIRCLE, 25 copies and GLUE ADJACENT MESHES. Then i get the whole mesh of the whole machine, but with one problem. I get 26 different mesh surfaces from each starting mesh surface i had for one blade. That's very bad because after i have to set the boundary conditions 26 times because the same surface has been duplicated 26 times! What i'd like to get is that pre merge the copies of the same starting surface, so that after i have not, for example, 26 hub surfaces but only one containing the whole hub surface.

Is my point clear? Can anybody help me?

Cheers
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Old   January 31, 2008, 11:29
Default Re: copy mesh
  #2
mic
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Try to do the same transformation inside Icem, is much more easy to control the process.
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Old   January 31, 2008, 11:44
Default Re: copy mesh
  #3
spillo
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In icem would be much better of course, the reasone i wanna do it in cfxpre is that icem requires too much CPU power to duplicate the mesh, it's actually impossibile to do that. I am afraid the problem is that is too much heavy the graphical representation of the mesh. Is there a way to duplicate it without representing the mesh after?
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Old   January 31, 2008, 12:06
Default Re: copy mesh
  #4
myron
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Is it possible to use the hotkey 'a' to select all the mesh in the copy process with the mesh display turned off? Then, maybe, after the merge/copy process the display will still be off. Try this with just one copy...

You could also do it in batch mode - but you'll have to do it once (maybe just one copy) with the replay record on - so you can get the syntax to use for the script.
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Old   January 31, 2008, 12:23
Default Re: copy mesh
  #5
Magnoli
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Hi,

If you still want to do it with CFX, you do not have to define 26 bc's, but select 26 regions for a single bc. Maybe it is not so bad, comparing to difficulty you mentioned with ICEM.

Regards, Magnoli.
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Old   January 31, 2008, 17:27
Default Re: copy mesh
  #6
Glenn Horrocks
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Hi,

ICEM is very slow when it is displaying a large mesh - this usually means you are displaying the volume elements as well as the surface elements. Turn the visibility of the volume elements off and ICEM should start running quickly again.

Regards, Glenn Horrocks
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Old   February 1, 2008, 11:43
Default Re: copy mesh
  #7
spillo
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Thank you, this option works very well. Does somebody know how to work in CFX Pre without the domain visualization? Having this huge mesh the graphical representation of the domain makes everythin slower, and i can work perfectly without using it.
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Old   February 2, 2008, 07:21
Default Re: copy mesh
  #8
rostam
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What about blade modeler isn't it suitable for turbo machineries? I have not used blade modeler but I wanted to know. tanx
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