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

Radiation modeling

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 30, 2010, 00:27
Smile Radiation modeling
  #1
New Member
 
RATHISH
Join Date: Feb 2010
Posts: 13
Rep Power: 16
rathish is on a distinguished road
Hello every one,
I have been studying the effect of surface radiation on the mixed convection heat transfer through a vertical annulus formed of two concentric cylinders with inner wall uniformly heated and outer wall adiabatic. As far as my problem is concerned, the mixed convection analysis is correct...When radiation is incorporated to the mixed convection, the temperature will definitely decrease. But in my case,the temperature difference between the maximum temperature of the heated wall during mixed convection and that during radiation(with emissivity of inner wall 0.85 and that of adiabatic-0) is found to be above 60 degree celsius...Is it possible? But, the rise in temperature of the adiabatic wall was very very less...That means the heat (drop in temperature) vanishes...Where does this heat go?
Or whether my radiation modeling is wrong.But i have tried s2s,DOM and DTRM models and all these models gave the same result....
Somebody please help me.......
Thanks...........
rathish is offline   Reply With Quote

Reply


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
Radiation modeling cloudnqh FLUENT 9 July 19, 2018 18:14
Modeling Thermal Radiation Kaushik Saha FLUENT 0 September 17, 2008 20:12
Radiation Modeling Raju CFX 0 July 5, 2005 06:50
Question about Radiation Modeling Zhengcai Ye FLUENT 0 October 12, 2004 19:44
Benchmark example for 3D radiation modeling! Klaus-Peter Helbig Main CFD Forum 3 October 25, 1999 03:40


All times are GMT -4. The time now is 03:23.