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[ICEM] Hexa-tet merging

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Old   October 18, 2013, 09:45
Default Hexa-tet merging
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Dear All,

I created a tet mesh in one part of the domain and a hexa mesh in another part. Both meshes don't give any error / warning message when checking them. Now, when I merge (edit mesh -> merge nodes -> merge meshes -> merge volume meshes -> merge surface mesh parts) the two meshes at their shared surface, the merging doesn't show any warnings / errors. But the merged mesh check fails with some "Surface orientations ... occupy the same volume" warning.
It looks like the tri mesh / pyramid layer has grown into the hex mesh domain.

The crazy thing is: I have two of these tri mesh domains that nearly look indentical. One mesh merging works as I wrote - the other one fails. I can't see any difference but obvioulsy there is one...

Does anyone have an idea what could be the reason?
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Old   October 18, 2013, 14:02
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Old   October 21, 2013, 02:03
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Hi Far,

Alright, here we go!
Right (working) side hexa:
right_1.jpg
Right (working) side tet:
right_2.jpg
Left (not working) hexa:
left_1.jpg
Left (not working) tet:
left_2.jpg

Merging surfaces output:
Code:
330 shells from the variable region deleted
160 bars from the variable region deleted
2105 vertices included
720 vertices removed
expecting 928 pyras, have 0 already
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Old   October 21, 2013, 02:05
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And here the errors after merging:
crap_1.jpg
crap_2.jpg

Code:
...
Running diagnostics for Surface orientations in subset "all"
    cells near 6.464936 -3.790370 0.372608 occupy the same volume
    cells 2624249 and 1015208
    face node numbers 1561625 1561760 1600603
    opposite vertices 1567686 3474
...
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