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

backpressure issue

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 12, 2010, 01:05
Default backpressure issue
  #1
New Member
 
sunqiang
Join Date: Nov 2009
Posts: 23
Rep Power: 16
matthewsun is on a distinguished road
HI,there!
I got a case which is to calculate the back pressure of an exhaust system, and it's perfectly converged ,but i was a little bit confused when it comes to post processing as the followings:
In the surface integrals of the report:
area-weighted average
total pressure Pa
inlet 52716.32
outlet 1773.2864
net 24235.805
problem is the net doesn't equal inlet minus outlet.why?

Last edited by matthewsun; June 12, 2010 at 05:01.
matthewsun is offline   Reply With Quote

Old   June 14, 2010, 05:01
Default
  #2
Senior Member
 
Max
Join Date: Mar 2009
Posts: 133
Rep Power: 17
coglione is on a distinguished road
Because "net" means the area-weighted average of both faces and not its difference.

cheers
coglione is offline   Reply With Quote

Reply

Tags
backpressure, exhaust system

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Subsurface Creation Issue cfdengineer STAR-CD 1 April 9, 2010 19:36
Memory issue - Suse 10 - Opterons Andy R FLUENT 1 June 23, 2008 15:44
Problem trying to use a backpressure Stephen FLUENT 0 October 13, 2002 13:08
STAR-CD Dynamics issue 16 CD adapco Group Marketing Siemens 0 November 30, 2001 11:25
Issue 4 of adapco-online Sreenadh Jonnavithula Siemens 0 December 21, 2000 14:41


All times are GMT -4. The time now is 08:47.