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

difference in results...

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

Reply
 
LinkBack Thread Tools Display Modes
Old   May 21, 2008, 00:50
Default difference in results...
  #1
mateus
Guest
 
Posts: n/a
Hi,

I'm simulating flow in an open valve (it's almost only a pipe). First I did a simulation with mass flow inlet and pressure outlet bc. When I checked the results the pressure difference upstream and downstream of the valve was about 30% too high. In the second simulation I set the pressure inlet and pressure outlet bc and checked the flow rate. This time the results were correct. If I repeat the simulation giving the last flow rate as a bc and check the pressure difference the result is again wrong.

Has anyone encountered something like that...such a influence of the (in essence the same) boundary conditions?

Thanks for the answers Mateus
  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
difference in results between 2D and 3D Michelle CFX 3 December 10, 2007 02:59
Difference in pressure drop results To all fluent users need help pls FLUENT 4 May 30, 2007 04:31
Difference in pressure drop results al-jasim FLUENT 0 May 28, 2007 09:54
Difference results between Steady and Unsteady? Giang T Vu FLUENT 6 May 22, 2004 06:37
Difference in results using different Mesh? Julie FLUENT 7 July 2, 2002 10:28


All times are GMT -4. The time now is 19:47.