CFD Online Logo CFD Online URL
Home > Forums > STAR-CD

cyclic boundary conditions

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

LinkBack Thread Tools Display Modes
Old   March 3, 2013, 14:55
Default cyclic boundary conditions
Senior Member
Join Date: Apr 2009
Posts: 118
Rep Power: 10
lost.identity is on a distinguished road
Hi, I'm trying to create cyclic boundaries for an axisymmetric cylinder with swirl. I made it only 1-cell thick (with 1 degree angle). I seem to get errors every time I try to set cyclic BCs.

I created two cyclic boundary surfaces and then try to match them. The way I create these cyclic boundary surfaces is by using the option "Create by picking surface based on Vset". What I essentially did was to select a cell on one side to create one cyclic surface and I did the same thing for the other side. I matched them next, which doesn't give me any errors. But it gives me a huge list of errors when I try to save the geometry file. Is there a simple way to do this without selecting vertices?
lost.identity is offline   Reply With Quote

Old   March 4, 2013, 11:04
Senior Member
Join Date: Mar 2009
Posts: 190
Rep Power: 10
Pauli is on a distinguished road
Sounds like you correctly created the cyclic pairs - first make two cyclic regions then cymatch the two regions.

What are the errors?
Pauli is offline   Reply With Quote

Old   March 5, 2013, 09:53
Senior Member
Join Date: Apr 2009
Posts: 118
Rep Power: 10
lost.identity is on a distinguished road
Thanks for the reply Pauli. I started all over again and now I'm able to save the file without any errors. Previously, I got the following error many times when I try to save the geometry.

1, 36001, 72001, 108001, 144001
When I was doing this before I deleted the cyclic boundaries I had defined earlier but I guess they didn't get properly deleted, so I re-did the mesh again and created the boundaries again.

Last edited by lost.identity; March 5, 2013 at 10:10.
lost.identity is offline   Reply With Quote


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
inlet boundary conditions newOFuser OpenFOAM 1 January 10, 2013 09:08
Water subcooled boiling Attesz CFX 7 January 5, 2013 04:32
snnappyHexMesh with cyclic boundary conditions longamon OpenFOAM 2 May 9, 2011 12:28
Cyclic boundary conditions in parallel thibault_pringuey OpenFOAM Bugs 1 April 2, 2011 15:21
periodic and cyclic boundary conditions Hadi Main CFD Forum 2 June 29, 2007 07:19

All times are GMT -4. The time now is 01:53.