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Old   January 29, 2014, 08:00
Default ICEM - hexa blocking
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Hi everyone,

I'm trying to learn how to do hexa meshes with ICEM CFD. I've done all the tutorials given by the software but my geometry is much more complicated than the examples.

Is it possible to do an hexa blocking of a difficult geometry? What I mean is, how much time does it take to control ICEM in an advanced way?

I've atached my case (is a PMSM electrical motor). Should i do it in another way? (Tetra mesh or poliedral mesh)

I've tried Ansys Meshing but I don't get the control i expect of the mesh and when I use the cut cell method it gives me too big meshes (80 M. elements). Any recommendations?
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Old   January 30, 2014, 05:44
Default My problem
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I've focused the problem in this way:
1. I've do the blocking of the shaft with an O-grid.
2. I've create another block for the lateral housing, but the mesh of the contact surface between the shaft and the lateral housing is not conformal (and I need it conformal because I want to simulate the heat transfer between bodies).
3. My idea is to do the blocking of the different bodies separately and then merge them. But I don't know how to get a conformal contact surface. I know that there is a tool in Edit Mesh>Merge Nodes>Merge Meshes, but it transform the hexa mesh in another type and I want all the model to be hexa.

Any ideas???

Do i have to focus the problem in another way?

Thanks in advance.
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Old   January 30, 2014, 10:21
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is the analysis for cfd ? or structural mechanics ? You should expect large number of element in hexa as well.
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New to ICEM CFD, try this document --> http://goo.gl/G2gkE
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Old   January 30, 2014, 10:28
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Quote:
Originally Posted by diamondx View Post
is the analysis for cfd ? or structural mechanics ? You should expect large number of element in hexa as well.
Thanks for your reply.

My analisys is for CFD. What kind of mesh would be better, tetra or hexa?
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Old   January 30, 2014, 10:40
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Can you share yuor geometry? I just want to see better than the pictures. And try to think about it.
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Old   January 30, 2014, 12:06
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for sure, it will require time to hexa mesh your geometry !
meanwhile, try a tetra mesh...
more details , pictures or even the geometry itself can help us judge...
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New to ICEM CFD, try this document --> http://goo.gl/G2gkE
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Old   January 31, 2014, 05:20
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Quote:
Originally Posted by diamondx View Post
for sure, it will require time to hexa mesh your geometry !
meanwhile, try a tetra mesh...
more details , pictures or even the geometry itself can help us judge...
I tried to attach it but it's too big. Could I send it to you by email or another way?

Thanks for all.
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Old   January 31, 2014, 07:14
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you can use dropbox for file sharing. or zip files and attach here directly.
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Old   January 31, 2014, 07:19
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Quote:
Originally Posted by Far View Post
you can use dropbox for file sharing. or zip files and attach here directly.
Hope this can help with the problem:

https://www.dropbox.com/s/tozslvpxa5...CFD-online.rar
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Old   January 31, 2014, 14:04
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can you please upload parasolid file? as i am using older version (14.5) and unable to open the file you have just sent...
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Old   February 3, 2014, 04:28
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Quote:
Originally Posted by Far View Post
can you please upload parasolid file? as i am using older version (14.5) and unable to open the file you have just sent...
Hope this is what you need:

https://www.dropbox.com/s/f1ajskjtzjzqj52/Geometry.rar
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