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

about boundary condition

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 30, 2009, 22:07
Default about boundary condition
  #1
New Member
 
Ki-hwan Jun
Join Date: Jul 2009
Posts: 9
Rep Power: 8
junbbung is on a distinguished road
In my model, the flow has constant flow rate 31.2 square milimeter/sec

of course 2D domain..


Using velocity inlet boundary condition, I must set the upper condition.

Please help me.. I really wonder about that.
junbbung is offline   Reply With Quote

Old   August 31, 2009, 07:36
Default
  #2
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,973
Rep Power: 30
-mAx- will become famous soon enough
adapt the right Velocity U.
Q = U . A --> U = Q/A
In your case you have to divide your massflow rate with the inlet length (in your 2d-case)
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- is offline   Reply With Quote

Old   August 31, 2009, 20:07
Default THanks..
  #3
New Member
 
Ki-hwan Jun
Join Date: Jul 2009
Posts: 9
Rep Power: 8
junbbung is on a distinguished road
Your reply really helps me.. THanks.. mAx...
junbbung is offline   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
Boundary Conditions Thomas P. Abraham Main CFD Forum 20 July 7, 2013 05:05
How to set boundary condition in Fluent for the fo Peiyong FLUENT 1 November 10, 2006 12:44
pressure boundary condition in fractional step Jean-François Corbett Main CFD Forum 3 January 10, 2006 09:49
1 and 2 Order Boundary condition at the same place CFD_Flo Main CFD Forum 4 July 11, 2005 11:57
How to resolve boundary condition problem? sam FLUENT 2 July 20, 2003 02:19


All times are GMT -4. The time now is 10:18.