CFD Online Logo CFD Online URL
Home > Forums > CFX

Additional Variables- in the Opening BC.

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

LinkBack Thread Tools Display Modes
Old   October 2, 2006, 08:09
Default Additional Variables- in the Opening BC.
Posts: n/a
Hi everyone,

I am modeling a multiphase system, in which I need to introduce two Additional Varialbes (AV) for each phase (water & Air) which they would be considered as oxygen concentration in each phase...

Problem: I have an opening boundary condition at the top of my model at which, the water is freely going in/out, (of course the same water of the domain). this means that I need to set the (AV)s at the OPENING boundary in a way that no new water comes in (but the same water contating the specitic oxygen concentration shall only enter the domain...), so I realized using the "probe" Expression (probe(AV)@top)which would give the value of the AV at the position "top" and set it for the same AV at the opening condition, but unfortunately it don't work (gives errors!!) since I'm using the same AV (of course at a specific place) to express the value of the same AV!!! which is obviously not logical!!! can I use/set the value of an AV at a specific timestep!?? (so that maybe I could avoid the error!?)

Would highly appreciate any help/comments...


  Reply With Quote


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
emag beta feature: charge density charlotte CFX 4 March 22, 2011 10:14
additional variables' effect ariel CFX 9 April 2, 2008 00:41
Additional Variables at the Opening Boundary Houman CFX 0 August 22, 2006 12:27
user SUBROUTINE for additional variables Tuks CFX 0 November 8, 2005 03:09
Replace periodic by inlet-outlet pair lego CFX 3 November 5, 2002 21:09

All times are GMT -4. The time now is 04:46.