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[ICEM] Icem creates unwanted boundaries

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Old   February 26, 2013, 12:54
Default Icem creates unwanted boundaries
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Wolfram Jahn
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Hi,
we use Icem 5.0 together with CFX 5.7 at my company. Every once in a while, without apparent pattern a few "artificial" boundaries appear when I import the mesh created in Icem into CFX Pre. Normally it's around a few elements within the body of the domain (image attached).

The mesh in Icem looks perfectly fine, so I'm not sure whether this is a problem in Icem or in Pre.

Any idea what could be the cause of this?

Thanks!
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Old   February 26, 2013, 20:00
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Stuart Buckingham
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Hi Wolfram,

I have experienced this problem in the past when importing meshes with hanging nodes into CFX. Can you run a full diagnostic check on your mesh in ICEM before exporting?

Stu
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Old   February 27, 2013, 00:46
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Sijal Ahmed Memon (turboenginner@gmail.com)
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CFX does support the one-to-three refinement.
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Old   February 27, 2013, 05:44
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Thanks Stuart, I will have a look at that today.

Far, I did not quite understand what you mean...sorry
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Old   February 27, 2013, 13:21
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I think I have identified the problem: it arises when I produce a prism layer on the surfaces. The diagnostic from the mesh checker is "Uncovered faces".

When I fix the problem Icem creates a boundary around the elements, which is (apparently) exactly what CFX does when it gets a mesh with uncovered faces.

I searched CFD Online forums for that error, but none of the proposed solutions worked.

My idea would be to delete the affected elements, and somehow re-mesh that part of the volume. Problem is that I can't efficiently identify the elements in order to delete them.

Any ideas?

thanks
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