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

boundary cell is undetected

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

Reply
 
LinkBack Thread Tools Display Modes
Old   May 9, 2008, 21:26
Default boundary cell is undetected
  #1
Syaiful
Guest
 
Posts: n/a
hi all..I have some question on STAR CD, i.e:

1. Boundary is not found after I check using "Check Everything"

2. I have tried to change the treatment in inlet cell and also cell wall thickness to specify y+ in the range of 30 and 60 (For turbulence k-e model/high Re number), however, I always failed. I have obtained y+ less then unity

So..anybody can tell me about these problems??
  Reply With Quote

Old   May 22, 2008, 06:38
Default Re: boundary cell is undetected
  #2
Reza
Guest
 
Posts: n/a
Hi,

Surely it's a case of an unattached Boundary in your model. Check your boundary with:

put your boundary region in a set by doing (replace XX with the problem region number)

bset news regi XX cset news bset cplot

if you see no fluid cells, then you must re-define your boundary region. If you do see fluid cells and still have the same output message, then there must be a double defined boundary region.

The safest way is to delete it by doing following:

bset news regi XX bdel bset

This operation will not harm your boundary setting on that particular region. Just put the cells back where you'd like the boundary to be placed on.

Good luck!
  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
How to identify boundary cell and internal cell dbxmcf OpenFOAM Running, Solving & CFD 1 August 25, 2008 21:59
No cell found for boundary beginner CD-adapco 2 September 26, 2005 08:47
in cell boundary condition yong FLUENT 0 April 5, 2005 11:58
Boundary cell co-ordinates StarCD CD-adapco 2 July 1, 2004 09:31
How can I know a cell is boundary in the posdat.f wy CD-adapco 1 August 9, 2002 02:53


All times are GMT -4. The time now is 21:17.