CFD Online URL
[Sponsors]
Home > Forums > FLUENT

plz help-boundary in VOF

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

Reply
 
LinkBack Thread Tools Display Modes
Old   September 26, 2007, 04:19
Default plz help-boundary in VOF
  #1
garima chaudhary
Guest
 
Posts: n/a
hi all

I have a very urgent n quick query which is really uphelding my work a lot. I am working wid the VOF model in a rotor zone of a centrifugal contactor and hence simulating it to know the fluid dynamics in it. One of my boundary conditions is pressure_outlet. There I need to specify the backflow volume fraction for the secondary phase. my system consists of water and air where air is primary phase. My query is that what does this backflow volume fraction means ? I am not clear about it. see at any boundary, fluid can leave or enter or while leaving a part of it can come back into the domain, so i want to ask that does the backflow volume fraction means the fraction of one phase in the amount of total fluid which is whether coming back into the domain or leaving at the boundary. or does this term represent the volume fraction of a phase which is coming back into domain while leaving. please clearly define what does this term actually mean ?

plz try to help me out in this asap.

regards garima
  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
Implementation of boundary conditions for FVM Tom Main CFD Forum 7 August 26, 2014 06:58
Free surface boundary condition in the VOF metod ves Main CFD Forum 2 March 8, 2011 16:23
CFX does not continue Shafiul CFX 10 February 17, 2011 08:57
Help on VOF boundary conditions Kelly FLUENT 8 August 13, 2007 11:16
Boundary conditions? Tom Main CFD Forum 0 November 5, 2002 02:54


All times are GMT -4. The time now is 06:09.