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

Excessively high temperatures

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

LinkBack Thread Tools Search this Thread Display Modes
Old   June 2, 2010, 02:53
Exclamation Excessively high temperatures
New Member
Join Date: Jun 2010
Posts: 2
Rep Power: 0
brossofor is on a distinguished road

I am simulating and open office AC system with Fluent. The office includes a human body and a PC generating each 75W and 35W of heat. I am using the k-Epsilon RNG model for turbulence ( I enabled viscous heating and buoyancy effects) along with the energy equation. I am getting to convergence but I am getting very high surface temperatures for the human and the PC (up to 250 C!!). What I know is that at steady state, the heat flux is equal to the convective heat flux. So such high temperatures may only be true if the convection coefficient is very low (nearly zero). But the AC system is operational and I have imposed a mass flow rate boundary condition. Anyone can help?
brossofor is offline   Reply With Quote


convection, energy equation, hvac, k-epsilon, rng

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
High Temperatures during compression John Siemens 2 August 29, 2007 03:42
abnormally high flame temperatures in C2H2/Air com Victor FLUENT 3 May 7, 2007 18:00
Single face with excessively high Heat Trans Coeff mat w FLUENT 3 April 10, 2006 12:38
Multicomponent fluid Andrea CFX 2 October 11, 2004 05:12
Compressible vs. incompressible NS at high Temperatures Jean Lacroix Main CFD Forum 1 December 24, 1999 06:21

All times are GMT -4. The time now is 07:00.