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

how to simulate exchanger?

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 7, 2008, 12:31
Default how to simulate exchanger?
  #1
Feimi
Guest
 
Posts: n/a
my model is: the hot-water pipe has small diameter (inner) , and the cold-water pipe has big diameter (outer). the heat tranfer from the hot-water through the steel pipe to the cold-water. boundary condition: (1)fliud1 (hot-water): velocity-inlet(0.1m/s) , outflow , T=640K (2)fliud2 (cold-water): velocity-inlet (0.1m/s), outflow , T=610K (3)solid : steel (4)wall (outside of cold-water pipe ): heat flux=0 because the Re<2300 , the problem is a liminar flow. the model seems no error i think. however, the reslut is dispointed me. the residual is always flat and very large;the cold water flow incorrect. i don't kown why it is , and i guess two reasons: (1) the model set has mistake or (2) fluent is not excellent to simulate this kind of problem which is the soild and fluid heat transfer couping
  Reply With Quote

Old   October 8, 2008, 10:59
Default Re: how to simulate exchanger?
  #2
chandra manik
Guest
 
Posts: n/a
What residual?, energy residual? If you wan heat transfer occured in this model, you have to beware on the boundary wall between two difference material " Shell boundary" where the konduction or convetion constant need to be stated. You also have to turn on the energy solver.

  Reply With Quote

Old   October 9, 2008, 08:39
Default Re: how to simulate exchanger?
  #3
Feimi
Guest
 
Posts: n/a
i have already turned on the energy solver
  Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to simulate Plate Heat Exchanger Summer FLUENT 4 February 17, 2022 02:37
HOW TO DESIGN AND SIMULATE HEAT EXCHANGER... fadly CFX 1 August 14, 2007 16:40
How to simulate 3D shell and Tube heat Exchanger san FLUENT 2 February 22, 2006 06:44
How to simulate mass transfer in heat exchanger? Yang Bin FLUENT 0 January 17, 2005 07:35
Heat exchanger mkiku FLUENT 1 July 21, 2004 10:53


All times are GMT -4. The time now is 22:01.