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

Periodic boundary!

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

Reply
 
LinkBack Thread Tools Display Modes
Old   January 17, 2008, 14:20
Default Periodic boundary!
  #1
Usman
Guest
 
Posts: n/a
Hi

I am simulating a flow in a duct with 4 cubes inside it. My supervisor had asked me to first use the normal boundary conditions (inlet and outlet) and then later switch to periodic boundary condition. However my solver always crashes when i run my case with normal BC. However, it seems to be running fine with periodic BC.

My question is how critical it is to set up periodic BC right at the out set of simulation. Is it going to affect my results when i have not run my case with normal BC in the first place?

My supervisor is not here otherwise i would have asked him about it! Thanks in advance!

Usman

  Reply With Quote

Old   January 17, 2008, 14:58
Default Re: Periodic boundary!
  #2
Usman
Guest
 
Posts: n/a
When i try to run my simulation solver carshes with following error messaage: "Error in subroutine CAL_TAUWALL_LAM". Anbody knows what that means or how to solve this problem! Thank you very much

Usman
  Reply With Quote

Old   January 17, 2008, 17:40
Default Re: Periodic boundary!
  #3
Glenn Horrocks
Guest
 
Posts: n/a
Hi,

The error looks like some sort of wall friction error. Check the wall boundary conditions are correctly set and the boundary conditions are well-posed.

Glenn Horrocks
  Reply With Quote

Old   January 17, 2008, 18:12
Default Re: Periodic boundary!
  #4
Usman
Guest
 
Posts: n/a
Ok! Thanks
  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
Symmetry and Periodic boundary conditions CFD_Fluent_User FLUENT 1 October 16, 2014 02:18
how to set periodic boundary conditions Ganesh FLUENT 13 January 22, 2014 05:11
Periodic boundary conditions happy5jump FLUENT 5 January 29, 2013 17:06
Problem with periodic boundary layers Phil FLUENT 15 October 2, 2000 14:56
periodic boundary conditions Ahmed Abdelwahab FLUENT 4 March 9, 2000 17:36


All times are GMT -4. The time now is 03:15.