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

2 phase heat transfer

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

Like Tree1Likes
  • 1 Post By Lexa

Reply
 
LinkBack Thread Tools Display Modes
Old   November 2, 2011, 04:42
Default 2 phase heat transfer
  #1
New Member
 
Alex Christantho
Join Date: Oct 2009
Posts: 10
Rep Power: 7
Lexa is on a distinguished road
I want to study about the phase change due to the heat added into the system.

My system is a solid rectangular (materials : wood) which has a hollow sphere inside. The sphere is filled with the phase-change materials (paraffin, phase-change temperature is between 295-300 K). The initial temperature is 273 K so the paraffin is still in solid phase.

then the heat flux is given on one side of the rectangular wood, which the other sides are insulated. I want to know the temperature contour and the liquid fraction for every seconds of simulation (unsteady conditions) but I have no idea how to setup the Fluent, specially to set these two materials (paraffin and wood). Should I use solidification/melting and multiphase (2 phase Eulerian mode) options or use the other one?

could anybody help me to develop this case?

Thank you.
javsalo likes this.
Lexa is offline   Reply With Quote

Old   November 3, 2011, 09:38
Default
  #2
New Member
 
Reza
Join Date: Jun 2011
Posts: 2
Rep Power: 0
hamedi.m.reza is on a distinguished road
Hi
In order to have heat gradient between wood and paraffin you have to model the geometry in 2 different body. Then mesh it and set the mesh interfaces of outer paraffing and inner wood walls. After importing the mesh to fluent, assign the mesh interface and couple the walls (fluent will create shadow walls automatically).
Set the BC of wood upper side to have heat flux and follow the solidification model.
Hope you find it practical.

Reza
hamedi.m.reza 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
Water subcooled boiling Attesz CFX 7 January 5, 2013 04:32
microchannel two phase flow with heat transfer mkj Main CFD Forum 2 September 27, 2011 21:49
MRF and Heat transfer calculation Susan YU FLUENT 0 June 2, 2010 08:46
CFX Heat Transfer RJamison CFX 0 July 24, 2008 12:11
Heat transfer coefficient for dispersed phase Julie CD-adapco 4 October 30, 2004 14:26


All times are GMT -4. The time now is 16:45.