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

Boundary condition issue in multi-phase model

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 4, 2010, 19:03
Default Boundary condition issue in multi-phase model
  #1
New Member
 
Carl Reilly
Join Date: Aug 2010
Posts: 1
Rep Power: 0
carl_r is on a distinguished road
Hi,

I am new to CFX, but have used Flow-3D and Magma previously.

I have a simple 2 phase, heterogeneous (air and fluid) casting model. The mold is initially full of air, fluid enters the domain through a pressure inlet boundary. I have specified 3 faces of the mold as boundaries of 'opening' type, with the fluid volume fractions 1 and 0 for air and fluid respectively (under fluid values tab). I expected this to allow the air out of the domain but not the fluid. This is my aim.

However, upon running the simulation both air and fluid are leaving the domain through these three boundaries.

My question is, in CFX how do i specify a boundary which will vent the air from my model, but not allow the fluid to leave the domain?

I'm sure that there is a simple answer to this but I'm not finding it.

Any help would be much appreciated.


Carl
carl_r 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
External Radiation Boundary Condition for Grid Interface CFD XUE FLUENT 0 July 9, 2010 02:53
Boundary condition at phase interface skp OpenFOAM Programming & Development 0 May 10, 2010 09:23
Concentric tube heat exchanger (Air-Water) Young CFX 5 October 6, 2008 23:17
Wall Boundary Condition in k - epsilon model abhijeet vaidya Main CFD Forum 0 July 14, 2002 03:18
Fluent 5.0 boundary condition issue with RSM Flav Main CFD Forum 2 October 20, 1999 04:57


All times are GMT -4. The time now is 11:18.