# ICEM periodic boundary

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 November 20, 2008, 08:30 ICEM periodic boundary #1 CG CHEN Guest   Posts: n/a Hi,all, I would like to generate the tetrahedral grid by using ICEM. My problem is I have a pair of periodic boundaries and the grid generated on these two boundary surfaces should be same. But I couldn't not find such kind of functions in ICEM to satisfy my requirements. I'm a beginner in using ICEM. Thank you for your help in advance.

 November 20, 2008, 09:29 Re: ICEM periodic boundary #2 Ahmad Al-Zoubi Guest   Posts: n/a Hallo CG CHEN, Go to Mesh ==> Global Mesh Setup ==> Global Mesh Parameters ==> Setup Periodicity. Good luck. Ahmad

 November 20, 2008, 09:46 Re: ICEM periodic boundary #3 CG CHEN Guest   Posts: n/a Thank you for your reply! I found that function. But when I choose translational periodic, the only choice is "offset", I'm not sure if it is enough for set the periodic boundaries, for example, the computational domain is a cube and top and bottom surfaces are periodic.

November 14, 2010, 08:09
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Sangram
Join Date: Jun 2010
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Quote:
 Originally Posted by CG CHEN ;90954 Thank you for your reply! I found that function. But when I choose translational periodic, the only choice is "offset", I'm not sure if it is enough for set the periodic boundaries, for example, the computational domain is a cube and top and bottom surfaces are periodic.
you should choose as offset whatever the dimension of the cube is.

 October 10, 2011, 09:44 #5 New Member   Siroos Azizmohammadi Join Date: Oct 2011 Location: Austria Posts: 17 Rep Power: 6 Hi guys, I am new user in ICEM CFD meshing. I wanted to create a periodic triangular mesh in a 2D rectangle. I used "Mesh ==> Global Mesh Setup ==> Global Mesh Parameters ==> Setup Periodicity" and translational one and set the offset as size of rectangle. Now I have to define opposite edges to specify which edges should have periodic condition. I don't know how can I do that. I tried to create block but I don't know the different options over there. It would be appreciated if somebody could give me some hint to solve the problem or share a documents that could help me. Regards, Siroos

 October 10, 2011, 14:21 #6 Senior Member   Edmund Singer P.E. Join Date: Aug 2010 Location: Minneapolis, MN Posts: 512 Rep Power: 12 Put this in the Meshing Forum? Try putting the edges into parts. I think you can use those parts as the periodic choices. I dont work with 2D ICEM much, but works fine for 3D.

 October 11, 2011, 02:56 #7 New Member   Siroos Azizmohammadi Join Date: Oct 2011 Location: Austria Posts: 17 Rep Power: 6 Ok. Thanks, I will do that.

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