CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Question about pressure inlet boundary condition.

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

LinkBack Thread Tools Display Modes
Old   November 30, 2007, 08:24
Default Question about pressure inlet boundary condition.
Posts: n/a
I am now simulating a 2D blade cascade problem. The object is one 2D blade with its channel. Periodic boundary conditions are used on the sides of the passage. Now I have to put pressure boundary conditions on inlet and outlet. I know the total pressure of inlet and static back pressure of outlet, but I don't know static pressure of inlet, so I use 0 Gauge pressure of the static pressure. However, the program always send error messages. Even I change the static pressure of inlet, the error is always there. Is it important to set the static pressure of inlet exactly? Or what would happen to cause this kind of message?

The message is like "temperature divergence", "pressure divergence", etc.
  Reply With Quote

Old   November 30, 2007, 08:39
Default Re: Question about pressure inlet boundary conditi
Posts: n/a
Hi Alina,

You have to check the Solution Control, especially the under-relaxation factors and discretizations.

For more information for under-ralaxation factors:

For more information for discretizations:

good luck

Hai Duc
  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
Pressure boundary condition C-H Kuo Main CFD Forum 11 September 17, 2015 11:41
velocity profile inlet boundary condition question Lcw FLUENT 3 August 3, 2012 05:53
Implications for heat transfer when outlet pressure boundary condition used Blob CFX 2 March 26, 2009 07:22
pressure with velocity inlet boundary conditions Ashraf Sharara FLUENT 1 August 21, 2008 07:29
may I use Pressure inlet Boundary as free surface? duci FLUENT 0 August 23, 2002 22:29

All times are GMT -4. The time now is 00:05.