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

heat transfer problem in multi-phase flow

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

Reply
 
LinkBack Thread Tools Display Modes
Old   October 2, 2001, 04:14
Default heat transfer problem in multi-phase flow
  #1
verypuzzled
Guest
 
Posts: n/a
hello people in the forum,

I'm very puzzled and frustrated over all these weeks in computing temperature profiles for a 3-phase mixing in a stirred vessel. 3 phases are- continuous liquid (phase1) and 2 dispersed phases of a gas (phase2) and the other type of liquid (phase3). ( both liquids are quite viscous compared to water)

The 2 disperse phases come into the computation domain through adding sources (a user3d-sparger). This adding stream is cold while the bulk environment (phase1 mainly) is hot. The correlation to calculate inter-phase heat transfer is by Hughmark. I expected to see all phases with temperature no more than the hot fluid originally present but the dispersed liquid phase (cold and which I specify as 3rd phase) is computed to have a temperature "WAY OVER" the hottest fluid. But where's the heat generated from? The other profiles (e.g. temperatures of phase1 and phase2), however, look reasonable in this preliminary run.

In order not to confuse any, I'd stop this already long message here. I am more than willing to provide the details if anyone has any advise in dealing with this system.

Please please help. I really need to get this right to move on to further computation.

Sorry for the long message and thank you for your attention.

p.s. the problem is set up in CFX4.4.
  Reply With Quote

Old   October 3, 2001, 11:16
Default Re: heat transfer problem in multi-phase flow
  #2
Herve
Guest
 
Posts: n/a
I'd like to see what you have set up and what your output file looks like to try and understand what is wrong...
  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
Pipe Flow Heat Transfer Saima CFX 5 January 30, 2011 17:41
Heat transfer problem in ansys please help me please...!!!!!!! rm2052 CFX 1 March 14, 2010 18:51
Convective / Conductive Heat Transfer in Hypersonic flows enigma Main CFD Forum 2 November 1, 2009 23:53
Conjugate heat transfer problem with porous media piko CD-adapco 1 April 17, 2009 15:41
How can I increase Heat Transfer at Domain Interf? B.Simon CFX 3 October 28, 2008 19:53


All times are GMT -4. The time now is 01:00.