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

About "DO radiation model" for flame

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

Reply
 
LinkBack Thread Tools Display Modes
Old   March 20, 2001, 06:18
Default About "DO radiation model" for flame
  #1
Harry Qiu
Guest
 
Posts: n/a
Hi,Mr or Mrs:

I am modeling a laminar-premixed-gaseos-combustion problem.

I have two questions:

(1)There are two DO(Discrete-Ordinate) radiation models(Gry-Discrete-Ordinate and Nongray -Discrete-Ordinate). Which one is applicable(suitable) for flue gas(flame)radiation?

(2)I have tried only to model radiation between the walls, which means radiation of the flue gas is not taken into consideration(disable it in DEFINE--> boudary conditions-->fluid zone-->not selecting radiation check-box). But the residual of the DO equation was always zero when the computer started iterating. It seems that the DO equation is not being calculated, Can you tell me why?

looking forward to your answer. Thank you a lot!! Sincerely yours,Harry.
  Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
natural convection problem with radiation jorien CFX 0 October 14, 2011 10:26
Surface incident radiation Pipiola FLUENT 0 August 11, 2009 16:46
Multiphase radiation in CFX Luk_Fiz CFX 5 March 17, 2009 05:51
Radiation: definitions visatron CFX 7 January 8, 2004 16:25
Fluent incident radiation problem Michael Schwarz Main CFD Forum 0 October 21, 1999 06:56


All times are GMT -4. The time now is 23:24.