CFD Online Logo CFD Online URL
Home > Forums > FLUENT

VOF plus Solidification/melting model

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

LinkBack Thread Tools Display Modes
Old   July 12, 2007, 23:04
Default VOF plus Solidification/melting model
Posts: n/a
hello everybody,

I use VOF and Solidification/melting model to solve phase changing material encapusulated in a spheric container opened to the air. considering the gravity field, natural convection will occur in the melting material, the solid phase will move down to the bottom, and the material volume expansion causing the air overflow throught the outlet. i patch a region of 85% phase changing material the air is the primary phase. the boudary condition is pressure-outlet. but the result is not correct. because after a short iterate the air diffuse into the phase change material. the curve of monitoring liquid fraction of solidification/melting is not the phase change material but include the air as the liquid phase. because the material didn't melt during the short time.

my question is:

1) do i need to define a interface between the two phase

2)should i consider the surface tension between the two phase

3)define/operating coditions/ reference pressure location ,which is the suitable value, at the bottom,at the outlet or at the center? because the air reversely flow into the container

the refer to the fluent help, there is an example about water and air in a revolving container. there is not need to extra define the interface.

  Reply With Quote

Old   July 16, 2007, 04:18
Default VOF plus Solidification/melting model
Posts: n/a
does anybody help me?
  Reply With Quote

Old   January 14, 2014, 12:30
New Member
Mahboobe Mahdavi
Join Date: Mar 2013
Posts: 22
Rep Power: 4
Mahboobe365 is on a distinguished road
Have you found the solution? would you please help me?
Mahboobe365 is offline   Reply With Quote

Old   April 29, 2014, 16:50
Join Date: Jan 2014
Location: Turkey
Posts: 36
Rep Power: 3
thermal energy is on a distinguished road
dear friends,

does anyone have a solution ? we need to help eachother. good works friends
thermal energy 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
VOF Model or Mixture Model mems21 FLUENT 2 March 9, 2010 11:37
A Problem with setting the time step in VOF model Le FLUENT 2 July 20, 2006 22:00
free surface of VOF and melting model? wanghong FLUENT 3 March 13, 2006 10:57
help needed for vof model yan FLUENT 3 December 16, 2005 02:17
Moving mesh or VOF? Giovanni Main CFD Forum 16 September 24, 2001 08:25

All times are GMT -4. The time now is 20:31.