CFD Online Logo CFD Online URL
Home > Forums > FLUENT

The pressure in Fluent

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

LinkBack Thread Tools Display Modes
Old   October 25, 2004, 23:04
Default The pressure in Fluent
Posts: n/a

What does the pressure mean in Fluent? Is it the same to P in the governing equation in the help files?

I simulated a case of water flow though a vertical tube, and the inlet and outlet boudaries are set to pressure-, but when the bottom inlet pressure is a lilttle higher(for example, 1Pa) than the top outlet, the flow direction will be upward. Because in my case I define the gravity, I am afraid of there are some problem in Fluent?

Could anybody give any ideas about this?

Best Regards,

  Reply With Quote

Old   October 26, 2004, 07:32
Default Re: The pressure in Fluent
Posts: n/a

Canīt be! look at the flow vectors in /display panel. If wrong, youīve set gravity in wrong direction. Normally gravity vector is same direction as natural (top->buttom), f.e ansys itīs like acceleration field (inversed direction)

hope i could help

  Reply With Quote

Old   October 26, 2004, 09:48
Default Re: The pressure in Fluent
Posts: n/a
HI, Optixxx:

Thanks a lot for your help! Now I know what's wrong with my case, I did not specify the operating pressure. It is the key point. I am very appreciate to your response.

B. Zhao
  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
Inputting pressure gradient in Fluent Josyula FLUENT 2 December 23, 2009 08:26
How to give pressure inlet in Fluent Vijayaragavan Main CFD Forum 1 December 17, 2007 10:40
Different kinds of pressure in FLUENT Mattia FLUENT 0 October 22, 2007 08:52
Definition of pressure Ola Nordblom FLUENT 1 August 16, 2001 15:58
Hydrostatic pressure in 2-phase flow modeling (long) DS & HB Main CFD Forum 0 January 8, 2000 16:00

All times are GMT -4. The time now is 18:50.