Temperature with radiation

Martin_Sz · December 8, 2014, 09:50

Hello everyone
I have question about temperature. If I make steady state simulation where I have max temp on heat elements 1100 C. Can in my fluid domain (with radiation phenomena) maximum temperature increase to 1140 C?
I have good imbalance about 0,5 %.
Best regards

Martin_Sz · December 8, 2014, 09:50

My fluid domain is closed with heat elements inside

ghorrocks · December 8, 2014, 18:44

We cannot answer that question based on the information provided. You would have to describe what you are doing more fully and the physics models involved.

Martin_Sz · December 9, 2014, 02:09

drawing on attachment

ghorrocks · December 9, 2014, 04:41

If you have boundary conditions will constant heat flux they can cause unbounded heating.

Martin_Sz · December 9, 2014, 06:35

I solve this problem. In previous simulation my heat flux boudary condition was wrong defined. I define 5000 W/m2. Correct will be with minus -5000 W/m2

December 8, 2014, 09:50	Temperature with radiation	#1
Martin_Sz Senior Member Marcin Join Date: May 2014 Location: Poland, Swiebodzin Posts: 313 Rep Power: 13	Hello everyone I have question about temperature. If I make steady state simulation where I have max temp on heat elements 1100 C. Can in my fluid domain (with radiation phenomena) maximum temperature increase to 1140 C? I have good imbalance about 0,5 %. Best regards

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Problem with zeroGradient wall BC for temperature - Total temperature loss	cboss	OpenFOAM	12	October 1, 2018 07:36
Calculation of the Governing Equations	Mihail	CFX	7	September 7, 2014 07:27
Too high temperature while radiation is on.	beerasmus	FLUENT	0	January 13, 2014 02:20
is internalField(U) equivalent to zeroGradient?	immortality	OpenFOAM Running, Solving & CFD	7	March 29, 2013 02:27
Multiphase radiation in CFX	Luk_Fiz	CFX	5	March 17, 2009 04:51

December 8, 2014, 18:44		#3
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,852 Rep Power: 144	We cannot answer that question based on the information provided. You would have to describe what you are doing more fully and the physics models involved.

December 9, 2014, 04:41		#5
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,852 Rep Power: 144	If you have boundary conditions will constant heat flux they can cause unbounded heating.

December 9, 2014, 06:35		#6
Martin_Sz Senior Member Marcin Join Date: May 2014 Location: Poland, Swiebodzin Posts: 313 Rep Power: 13	I solve this problem. In previous simulation my heat flux boudary condition was wrong defined. I define 5000 W/m2. Correct will be with minus -5000 W/m2