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

no convergence with pressure outlet BC

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 6, 2006, 04:05
Default no convergence with pressure outlet BC
  #1
Ralf Schmidt
Guest
 
Posts: n/a
Hi!

I have a simple geometry (turbulend flow over a plate, 2D, incompressible) and I can NOT achieve convergence! I have a

- pressure outlet BC at the top of my domain and at the right side, and a

- vel. inlet BC at the left side (the plate is at the bottom).

look at http://ww3.cad.de/foren/ubb/uploads/...elmagplate.JPG

When I use wall-BC at the top, everything is fine... But the results are wrong (a pressure gradient will appear).

What settings are appropiate for the seggregated solver?? what urf, what coupling and what discretisation should I use???

Any help is highly appreciated!

Ralf
  Reply With Quote

Old   June 6, 2006, 04:26
Default Re: no convergence with pressure outlet BC
  #2
san
Guest
 
Posts: n/a
Hi,

i think you want to simulate FLOW OVER A FLAT PLATE.

on top i think you can use symmetry or wall ( with no-slip) condition.

i hope this will help you.

bye san
  Reply With Quote

Old   June 6, 2006, 07:46
Default Re: no convergence with pressure outlet BC
  #3
Swarup
Guest
 
Posts: n/a
Consult a problem discussed in Anderson's book.
  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
simple model, difficult outlet Eric CFX 7 May 23, 2014 08:13
Force can not converge colopolo CFX 13 October 4, 2011 22:03
pressure oscillation near pressure outlet boundary kino Main CFD Forum 5 April 13, 2011 11:03
increasing mesh quality is leading to poor convergence tippo CFX 2 May 5, 2009 10:55
Backflow occuring at a pressure outlet? Dave FLUENT 1 August 12, 2004 17:39


All times are GMT -4. The time now is 08:46.