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

problem in glass radiation model (DO model)

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 10, 2012, 06:06
Default problem in glass radiation model (DO model)
  #1
New Member
 
nancy
Join Date: Sep 2012
Posts: 1
Rep Power: 0
wunan805 is on a distinguished road
Hi, everyone

I'm working on a glass radiation model in a closed domain with FLUENT, in which the temperature of glass will reduce gradually. The wall of the closed domain is adiabatic and there are a group of "heaters" attached on it to reduce the temperature. A fan is posed in the closed domain. The initial temperature of the glasses is 833K and the temperature boundary of the "heaters" is 713K.

In fluent, the steady model is utilized and I adopt k-e turbulent model, DO radiation modle and energy model with the default parameters.

I use velocity inlet and out flow boundary to present the fan. Utilize bossineq model in air density.

Use all-zone initial condition: pressure-0, velocity-0.001, temperature-833K.


There are some problems in the result. As the interation grows, the temperature of the glass is reduced gradually and finally the center temperature is lower than edge. But due to the poor heat conduction of glass, I think the center temperature should be higher. I don't know why the result like this. Maybe some errors exit in the cas.

Thank you for your attention!
wunan805 is offline   Reply With Quote

Reply

Tags
do model, glass radiation, temperature problem

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
Problem on EDC model for coal combustion lei FLUENT 4 September 3, 2015 10:39
convergency problem with Solid Pressure Model commonyue Main CFD Forum 0 March 30, 2010 06:18
Radiation problem for car model aero FLUENT 1 February 4, 2007 00:30
multiphase mixing Problem with MRF model in MixSim Srinivas FLUENT 0 October 17, 2005 07:35
RE: Radiation model Ashutosh Joshi FLUENT 1 January 30, 2001 11:50


All times are GMT -4. The time now is 14:00.