|
[Sponsors] |
March 19, 2013, 17:05 |
Help Setting up Heat Transfer
|
#1 |
New Member
AJ Hunter
Join Date: Feb 2013
Posts: 29
Rep Power: 13 |
I am trying to set up a system where there is a heat source inside of a wall that is being struck by a moving fluid:
| | | | | | | | <---- Fluid | | | | | | Wall My problem is that I can't seem to get the fluid to absorb heat from the wall source. The temperature of the fluid is the same throughout the post-output. The heat inside the wall comes from a user function and it appears to be working properly (changing the function changes the final temperature). Additionally, it appears as if the wall is being properly cooled by the fluid (Change in fluid velocity changes temperature of the wall). Is there a tutorial out there that anyone could point me to that would be helpful? Or is there an easy/obvious solution to what I am doing wrong? |
|
March 19, 2013, 17:28 |
|
#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,697
Rep Power: 143 |
It sounds like you have not put an interface between the solid and fluid domains. The interface does the coupling between the domains.
|
|
March 19, 2013, 17:38 |
|
#3 |
New Member
AJ Hunter
Join Date: Feb 2013
Posts: 29
Rep Power: 13 |
I have made interfaces, but it might not be correctly done. In the wall domain I have an interface on the surface of the wall and I have its Heat Transfer set to "Conservative Interface Flux". I have an additional interface in the fluid domain, on the "fluid wall" and it has the same settings (along with the additional fluid settings such as No Slip and Smooth Wall).
|
|
March 19, 2013, 18:14 |
Link to picture of my setup
|
#4 |
New Member
AJ Hunter
Join Date: Feb 2013
Posts: 29
Rep Power: 13 |
https://plus.google.com/u/0/photos/1...95989585547202
That is a link to the picture of my geometry and my domain, subdomain, and interface tree. |
|
March 20, 2013, 06:06 |
|
#5 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,697
Rep Power: 143 |
Also check the interface non-overlap area in CFD-Post. That will show you any sections of the interface which do not connect.
The link is not visible for me. |
|
March 20, 2013, 16:20 |
|
#6 |
New Member
AJ Hunter
Join Date: Feb 2013
Posts: 29
Rep Power: 13 |
That link should now work since I shared the image as public.
If you can view it, you will see a disk at the very top of the image. This represents the heat source wall. The fluid does not strike the entire thing, only the center of the disk. This center of the disk also happens to be where all the heat generation takes place. Based on the area ratio of the fluid interface to the size of the aluminum disk, the values in the output make sense. Domain Interface Name : Al Water Discretization type = GGI Intersection type = Direct Non-overlap area fraction on side 1 = 5.90E-01 Non-overlap area fraction on side 2 = 0.00E+00 |
|
March 23, 2013, 16:09 |
|
#7 | |
Member
Thiagu
Join Date: Oct 2012
Location: India
Posts: 60
Rep Power: 13 |
Quote:
Couldn't see your file. Pls upload it with your reply. |
||
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Two-sided Wall Heat Transfer BC - No Separate Solid Mesh and No Heat Transfer Coeff | swahono | OpenFOAM Running, Solving & CFD | 10 | October 15, 2018 05:43 |
Periodic boundary condition - pipe flow -setting up heat transfer | Explorer | FLUENT | 0 | December 4, 2012 03:36 |
Heat Transfer mechanisms | tafaugl | CFX | 1 | November 7, 2012 18:46 |
Heat Transfer in Porous Medium | eryan | STAR-CD | 0 | September 28, 2010 13:14 |
Convective Heat Transfer - Heat Exchanger | Mark | CFX | 6 | November 15, 2004 15:55 |