# [ICEM] Automatic geometry preparation for hex mesh and circle curve splitting

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May 3, 2013, 08:58
Automatic geometry preparation for hex mesh and circle curve splitting
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Join Date: Sep 2011
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Rep Power: 5
Hello.
I am learning ICEM CFD. And watch one interesting video
(http://compteacher.ru/engineering/55...obuchenie.html) – video №4 (L-type geometry with 4 inlets).
Author of this video make hex mesh very fast and easy.

But one thing is not clear for me.

When he starts work with blocking, he has a lot of predefined points on geometry.
On circle curves there are 4 points like on figure №2 (not like on figure №1).

Also he said that this point can be automatically calculated base on the feature angle and tolerance (if I hear correctly).

So my question is how we can split circle curves to 4 arc curves automatically (like in figure №2)?
And how prepare geometry for hex meshing – add additional points - also in automatic?

I find some answers, but they need a lot of work to do
1. In ICEM make on circle curve 4 points and split this curve by them. (allot work on every curve)
2. In ANSYS DesignModeler – split edge command + split type: split by N=8 (this variant is a good one)
It will be cool to do this preparation in automatic not by hand
Attached Images
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 May 3, 2013, 10:38 #2 Super Moderator     Ghazlani M. Ali Join Date: May 2011 Location: Canada Posts: 1,291 Blog Entries: 23 Rep Power: 20 under geometry tab, click on create point ---» select "paramater along a curve". if you give it 0.5, the point will be created half way the curve... use 0.25 and .75 to get what you want. __________________ Regards, New to ICEM CFD, try this document --> http://goo.gl/G2gkE Ali

 May 5, 2013, 11:00 #3 New Member   Join Date: Sep 2011 Posts: 14 Rep Power: 5 Thanks for answer. But I’m mentioned this variant (see my answer №1). To deal with this you should create 4 points and than splits. A lot of hand work, not cool! Using DesignModeler is much faster, but not really automatic.

 Tags geometry preparation, split curve

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