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

reference pressure cell-where?

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

Reply
 
LinkBack Thread Tools Display Modes
Old   May 26, 2003, 03:24
Default reference pressure cell-where?
  #1
Micha
Guest
 
Posts: n/a
Hello, I have some problems with a pressure outlet. The flow in some cells is directed sharply inwards, although it should flow outwards. I thought it could be some problems with my choice of the reference pressure cell?! Does anybody know if there is anything important to receive attention choosing the reference pressure cell? Thanks, Micha
  Reply With Quote

Old   May 27, 2003, 00:48
Default Re: reference pressure cell-where?
  #2
Stefan
Guest
 
Posts: n/a
AFAIK, the choice of the reference pressure cell is only important in compressible flow.
  Reply With Quote

Old   May 28, 2003, 08:41
Default Re: reference pressure cell-where?
  #3
John
Guest
 
Posts: n/a
If you have pressure boundary, then the reference pressure cell is not important.
  Reply With Quote

Old   May 28, 2003, 09:45
Default Re: reference pressure cell-where?
  #4
x
Guest
 
Posts: n/a
Switch the "Environmental Pressure" option in the pressure boundary region definition.

  Reply With Quote

Old   May 30, 2003, 08:49
Default Re: reference pressure cell-where?
  #5
Micha
Guest
 
Posts: n/a
I changed the boundary condition at the outflow from 'pressure' to a simple outflow condition, and got a good solution. Then I changed once again to pressure boundary and made a restart. Now the field was calculated as expected. Probably, there was an initial problem when calculating with the pressure boundary from the start on.
  Reply With Quote

Old   June 2, 2003, 05:50
Default Re: reference pressure cell-where?
  #6
Dejan
Guest
 
Posts: n/a
In Multiple Reference Frame, which have INLET-PRESSURE boundary coupled pairs, itś important to use some coupled monitoring and referenced points pairs.Its would provide good or bad convergence.
  Reply With Quote

Old   June 20, 2003, 05:27
Default Re: reference pressure cell-where?
  #7
Jing
Guest
 
Posts: n/a
If I have compressible flow field and do not have pressure BC, where should I define the reference pressure cell?

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
Pressure reference cell maka OpenFOAM Running, Solving & CFD 6 January 28, 2009 10:40
Convergence control using reference Cell titio OpenFOAM Running, Solving & CFD 1 March 6, 2008 05:45
reference cell novice CD-adapco 1 April 30, 2004 09:00
Reference Pressure Danard CFX 2 November 12, 2002 15:11
Pressure Reference Cell mim CD-adapco 1 June 17, 2002 08:29


All times are GMT -4. The time now is 04:44.