CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > CFX

periodicity in ICEM

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   June 23, 2006, 06:34
Default periodicity in ICEM
  #1
Astrid
Guest
 
Posts: n/a
Hi All,

I want to create a rotational periodic mesh in ICEM/Tetra. I found the Global Mesh Size parameters and have set this correctly. However, After meshing the mesh is not periodic. I can see that quite easily. And when I want to check the mesh on peridocity, I have to select which surfaces are periodic, and then ICEM tells me that there is no periodicity.

I think I have to select which surfaces are periodic. But where.............. I don't know.

Can anyone tell me?

Regards, Gert-Jan

  Reply With Quote

Old   June 23, 2006, 06:52
Default Re: periodicity in ICEM
  #2
Michael Bo Hansen
Guest
 
Posts: n/a
Mesh/ Set Global Mesh Size/ Set Up Periodicity.
  Reply With Quote

Old   June 23, 2006, 06:58
Default Re: periodicity in ICEM
  #3
Astrid
Guest
 
Posts: n/a
Hi Michael,

Yes, I have already found that. But where can I select the surfaces/parts that are periodic? I do not see a pull down menu or something like that. At least not such a selection menu with the different parts that I get when I want to check the periodicity after meshing (Edit Mesh/Check mesh/Periodicity).

Regards, Astrid

  Reply With Quote

Old   June 23, 2006, 07:01
Default Re: periodicity in ICEM
  #4
Michael Bo Hansen
Guest
 
Posts: n/a
As far as I know, you don't need to specify the surfaces explicit.
  Reply With Quote

Old   June 23, 2006, 07:06
Default Re: periodicity in ICEM
  #5
Astrid
Guest
 
Posts: n/a
I can't find it either. But I don't get a periodic mesh and the check mesh-option triggered me.......

Astrid
  Reply With Quote

Old   June 23, 2006, 07:51
Default Re: periodicity in ICEM
  #6
myron
Guest
 
Posts: n/a
Correct - you don't specify which geometry is periodic - the mesher determines that internally. Of course - the geometry also has to be periodic - matching the parameters mentioned in Global Mesh Size - Periodic.

It's also best to create a body/material point along the mid-plane of the periodic section. Then create the mesh - and it should be periodic.
  Reply With Quote

Old   July 12, 2006, 21:46
Default Re: periodicity in ICEM
  #7
KJS
Guest
 
Posts: n/a
Is this a hex or tet mesh? For a hexa mesh, in addition to specifying the periodicity as you have indicated, you have to manually 'set peiodic nodes'. That is you have to specify which node maps to which.

If a tet mesh, then you should only need what you have specified. Are you sure of the angle and axis you have specified is correct?
  Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
ICEM periodicity nodes after mesh generation... Andrey CFX 8 May 1, 2012 17:11
Periodicity in ICEM James Main CFD Forum 3 January 13, 2009 15:20
ICEM: unstruct tet grid with periodicity? Markus CFX 5 October 2, 2008 07:14
Rotational periodicity on tetra meshes with ICEM jorllam CFX 0 February 2, 2006 16:39
Periodicity Definition in ICem CFD 4.3x apit CFX 0 February 27, 2004 12:08


All times are GMT -4. The time now is 04:30.