CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

Heat Exchanger Simulation

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

LinkBack Thread Tools Search this Thread Display Modes
Old   March 18, 2010, 15:45
Smile Heat Exchanger Simulation
New Member
Join Date: Mar 2010
Posts: 1
Rep Power: 0
tightaznbreaka is on a distinguished road
Hi all,

I'm currently working on a school project to design a fin tube heat exchanger (hot oil in tubes, air over fins) using CFD. I'm not quite sure how I should begin modeling. I have already done hand calculations to determine the surface area that would be required based on problem specifications of oil inlet temperature and oil outlet temperature.

What I need to confirm in CFD:
-Air temperature coming out.
-Oil temperature coming out to make sure it meets the problem requirements.(More concerned about this one)

This is an image of a concept made in solidworks (I know these fins are way oversize, I was just trying to get a feel for how it would run in Fluent).

So here are the things that I have already tried:
-Tried importing the above CAD into Gambit to mesh. Meshing however returns fatal error every time. (I would have applied a boundary condition on the tubes equal to the air temp in this case but it never got that far).
-Tried building a rectangular prism around the above geometry and subtracted the heat exchanger leaving a negative of the heat exchanger inside the rectangular prism. This too failed when meshing. (The rectangular prism would have served as a wind tunnel of sorts but couldn't get it that far.)

-Is there a way to do this problem in 2d? If so how do I ensure that the fins are taken into account?
-Does anyone know where I can read a heat exchanger tutorial or something of that nature. (I have already performed the tutorial by Ansys of a periodic flow, which I don't think this is because as the oil moves through the piping the heat flux is going to change because temperature difference changes)?

Please any help would be much appreciated.

Thank You
tightaznbreaka is offline   Reply With Quote


fin, heat exchanger, heat transfer, tube

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
Diesel combustion simulation ( Heat release rate) venkatesh Siemens 2 April 29, 2009 07:38
Natural convection - Inlet boundary condition max91 CFX 1 July 29, 2008 20:28
need help for using user defined heat exchanger sinha FLUENT 2 August 6, 2007 17:16
heat exchanger in typical air-conditioning system! Yang Bin CFX 0 May 11, 2005 08:14
calculation of shell-and-tube heat exchanger alex Phoenics 4 August 28, 2001 03:06

All times are GMT -4. The time now is 09:11.