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

boundary condition

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   November 9, 2004, 04:56
Default boundary condition
  #1
christian
Guest
 
Posts: n/a
hi folks do anyone of you know how i need to set the boundarycondition on a face that so it function as a valve (only inlet, no outlet). it must fullfill a tank with air, if the presure in the tank is less than the atmospheric presure. thanks christian
  Reply With Quote

Old   November 14, 2004, 12:24
Default Re: boundary condition
  #2
H
Guest
 
Posts: n/a
after each time step, you can check using a UDF if the pressure in the tank is less than atm. pressure. If yes, then you can impose some velocity. Thus model the bc as vel. inlet. use define profile to set vel profile. depending on pressure values, the velocity is either zero (valve shut) or some positive value which will be decided from your valve characteristics.
  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
Domain Imbalance HMR CFX 5 October 10, 2016 06:57
Boundary Conditions Thomas P. Abraham Main CFD Forum 20 July 7, 2013 06:05
Setting outlet Pressure boundary condition using CAFFA code Mukund Pondkule Main CFD Forum 0 March 16, 2011 04:23
How exactly the "pressure outlet" bdry condition compute properties on the boundary? yating9901 FLUENT 3 June 28, 2010 13:26
How to set boundary condition in Fluent for the fo Peiyong FLUENT 1 November 10, 2006 12:44


All times are GMT -4. The time now is 02:04.