|
[Sponsors] |
June 28, 2016, 20:14 |
Selecting Heat Transfer Boundary Conditions
|
#1 |
New Member
Tyler
Join Date: Oct 2015
Posts: 7
Rep Power: 11 |
Hello,
I am trying to model cooling fin heat transfer with convection. My problem definition includes having the heat sink have a power of 120 W, a heat transfer coefficient of 250 W/m^2-K, and a stream temp of 25 C. I am trying to model this in fluent. When trying to specify the wall boundary conditions, I can either specify the heat flux from the wall OR the heat transfer coefficient, free stream temp, and heat generation rate (W/m^3-K). I do not want to specify a heat generation rate, because at the base of my solid material, a volume of the heat sink is not specified. I would prefer to specify the heat transfer coefficient, the stream temperature and the power (or power per unit area), instead of trying to make up a heat sink volume. Is there a way to do this? |
|
June 29, 2016, 16:33 |
|
#2 |
Senior Member
nm
Join Date: Mar 2013
Posts: 100
Rep Power: 13 |
define some wall thickness say (1mm) and then specify heat generation rate.
|
|
July 11, 2016, 00:23 |
|
#4 |
New Member
Tyler
Join Date: Oct 2015
Posts: 7
Rep Power: 11 |
Creating a wall thickness does seem like a straightforward solution which I will try.
I was originally trying to create mixed boundary conditions, but Fluent would not allow me to specify what I wanted to. Thank you both for the advice! |
|
Tags |
ansys, convection, fluent, heat transfer |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Domain Imbalance | HMR | CFX | 5 | October 10, 2016 06:57 |
Boundary conditions for enabling heat transfer | dre028 | Main CFD Forum | 2 | March 30, 2014 01:09 |
Question about heat transfer coefficient setting for CFX | Anna Tian | CFX | 1 | June 16, 2013 07:28 |
Water subcooled boiling | Attesz | CFX | 7 | January 5, 2013 04:32 |
natural convection | mehrdadeng | CFX | 10 | February 25, 2011 06:25 |