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cpd29 March 23, 2009 18:27

ICEM hexa meshing - need help!!
2 Attachment(s)
I am relatively new to ICEM tool and using it for my masters thesis. I am currently in the blocking step and have a difficult geometry feature that I don't know the best way to mesh. I want to use hexa-mesh but the mesh comes out poor quality. Any tips on how to mesh the indicated area (see attachment Attachment 78) would be greatly appreciated. I haven't used o-grids and not sure what those are...would it help? I have spent way too much time on this and desperately need some pointers and i havent seen many useful training tools out there.


Attachment 78

Attachment 79

rikio March 24, 2009 01:57


It is a simple geometry to mesh in hex. O-grid should be used to improve quality, and high quality mesh is very easy to be obtained.
Regarding what are O-grid, please take a look at the documentation and tutorials. They will tell you what they are.

cpd29 March 24, 2009 10:08

If I show you what I have so far for meshing, would you be willing to give me pointers? I can send you a picture or the actual file.


rikio March 24, 2009 10:21

OK, I think it won't take much time to show you a solution. Just send me the .tin file.

pratikmehta March 24, 2009 10:24

It seems not so difficiult to mesh this by blocking strategy, O grid surely help but before you need to try some blocking tutorial otherwise you willl spend too much time in just Hex blocking this one. I suggest you can also go for tet mesh with prism layers and see how are the results ,in the mean time you can try hex blocking this geometry .

Best of luck

cpd29 March 24, 2009 11:33

1 Attachment(s)
See attached file for the .tin file. As you can see, I started the blocking around the curved geometry. I've tried several methods that didn't give a good mesh so this is basically where I started from. The problem is at the corners...not sure what to do about the blocking and mesh there. Any help is much appreciated!


Attachment 84

pratikmehta March 25, 2009 03:58


I had a quick look, n i could spot many duplicate curves , first thing you should do is to put all curves in a same family , Unfortunately at work i cannot do things not concerning to work , also we dont have blocking licence anymore , may be in my free time I can suggest you a strategy for blocking.

best of luck

fauka March 25, 2009 05:58

1 Attachment(s)
Since the model is symmetric, I used half symmetry. Check out the blocking.

rikio March 25, 2009 09:35

1 Attachment(s)

I post a solution, just meshed section you concern.

cpd29 March 27, 2009 13:44

Thank you all sooo much for your help! Your solutions really helped me and i can make progress on my thesis again. Again thanks! :-)

amitdesh1 March 31, 2009 04:50

ICEM Hexa blocking
Hi Colleen,

For the model you are working on, ICEM hexa can work very well. Give 2 transverse splits where you are having this step. Generate a through and through O-grid. Only in the region of this step, put the outer 4 blocks in the family "VORFN". Now the projection of edges would automatically change from "Edge-> none" to "Edge-> Surface". Map the related vertices accordingly.

Hope this helps.


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