CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Vacuum with two-phase flow

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

LinkBack Thread Tools Display Modes
Old   October 4, 2002, 16:08
Default Vacuum with two-phase flow
Ahmed Khattab
Posts: n/a
Hi everybody,

I already used FLUENT to model the injection of resin inside a mold, which contains carbon fiber mat, as a two-phase flow through a porous media. The mold is simulated in a 2D as a rectangle with an inlet port on the right side and vent port on the left side. The injection of resin is considered as a two-phase flow, where the volume fraction of the injected resin is one and the volume fraction of air inside the mold, before the injection, is also one. In order to track the resin-air interface the volume of fluid (VOF) model is used. The transient time terms are considered. There is a very good agreement between this model and the previous experimental results. BUT NOW I want to apply VACUUM inside the mold from the vent port and the resin will be sucked from the inlet port at atmospheric pressure. CAN anyone help me in that? How can I apply the vacuum? And in this case what will be the conditions for the two phases, since there will be a vacuum inside the mold not air as in the previous case. Thanks in advance.
  Reply With Quote

Old   August 7, 2010, 00:05
New Member
Goker T
Join Date: Aug 2010
Posts: 2
Rep Power: 0
gtuncol is on a distinguished road

I'm having the same exact problem, were you able to find a solution?

gtuncol is offline   Reply With Quote

Old   August 8, 2010, 11:38
Senior Member
Jouke de Baar
Join Date: Oct 2009
Posts: 126
Rep Power: 10
jack1980 is on a distinguished road
Don't know if you can create a vacuum. You might however use a compressible flow and have a very low pressure at some outlet. This should work and at the same time it could even be a more accurate model of the actual problem?
jack1980 is offline   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
Two Phase Darcy flow with gravity -> problem Cyp OpenFOAM Programming & Development 0 November 17, 2010 08:58
two phase flow + ice phase and breaking soeren87 OpenFOAM Running, Solving & CFD 0 September 19, 2010 10:20
Two phase flow in a distributor Mohsin FLUENT 5 May 24, 2010 02:57
how 2 freeze 1 phase flow field & start lagrangian KK CFX 5 February 14, 2008 17:48
swirling two phase flow Ken Schifftner Main CFD Forum 6 July 10, 2000 14:19

All times are GMT -4. The time now is 02:09.