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

Opening boundary condition

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 10, 2012, 11:10
Default Opening boundary condition
  #1
New Member
 
Elias Paez
Join Date: Nov 2011
Location: Madrid
Posts: 25
Rep Power: 14
sicfred is on a distinguished road
Hi all,

My question is quite simple:
Is there an "Opening" BC in Fluent like in CFX? Because, I usually use the "pressure_outlet" to achive this condition (gauge pressure=0), but I'm not really sure if it is a correct solution.

Regards
sicfred is offline   Reply With Quote

Old   May 11, 2012, 02:21
Default
  #2
Senior Member
 
Join Date: Mar 2009
Location: Indiana, US
Posts: 186
Rep Power: 17
delaneyluke is on a distinguished road
The Opening BC in CFX is also a pressure outlet BC. Only difference is that it allows a reversed flow and does not close off faces which encounter a reversed flow (like the pressure outlet BC does in CFX)

Regards
Luke
delaneyluke is offline   Reply With Quote

Old   May 11, 2012, 06:18
Default
  #3
New Member
 
Elias Paez
Join Date: Nov 2011
Location: Madrid
Posts: 25
Rep Power: 14
sicfred is on a distinguished road
Thanks Luke,

And, do you know if it exist a big difference between use pressure inlet or pressure outlet in this case?, because i saw people in the forum using pressure inlet, and i think it is not a good solution.
sicfred is offline   Reply With Quote

Old   May 11, 2012, 06:46
Default
  #4
Senior Member
 
Join Date: Mar 2009
Location: Indiana, US
Posts: 186
Rep Power: 17
delaneyluke is on a distinguished road
In which case? What are you trying to analyse?
In most cases a pressure inlet with a pressure outlet is the most stable BC combo

Regards
Luke
delaneyluke is offline   Reply With Quote

Reply

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
Boundary condition clarification shaswat CFX 1 April 8, 2012 04:06
Fluent Boundary Condition for Opening rippert42 FLUENT 11 November 9, 2011 12:06
External Radiation Boundary Condition (Two sided wall), Grid Interface CFD XUE FLUENT 0 July 8, 2010 06:49
CFX Solver : Sudden crash Hervé CFX 2 June 16, 2008 06:40
boundary condition set for opening Hellen Main CFD Forum 7 June 29, 2005 09:21


All times are GMT -4. The time now is 13:26.