How to include radiation between heater and walls?

wc34071209 · February 19, 2014, 09:17

Hello Foamers,

I am doing a case with a heater in a cubic room. The heater could be very hot and therefore the radiation heat flux from the heater to the walls cannot be neglected.

Therefore I am considering to apply a radiation model. As far as I know, OF has three radiation models: viewing factors, P1 and FVDOM.

Which one is suitable for my case? and in addition how to set up boundary condition for heaters and other walls?

Any reply is highly appreciated.

chriss85 · May 9, 2014, 06:07

Not sure if this is still recent.

P1 is suitable for diffusive radiation in participating media which are optically thick.
fvDOM is suitable when the medium is thinner and you need to capture the geometrical behavior of the radiation.
I don't know too much about viewFactor method, but I believe it is only for non-participating media, don't quote me on that though.

February 19, 2014, 09:17	How to include radiation between heater and walls?	#1
wc34071209 Senior Member Yuehan Join Date: Nov 2012 Posts: 142 Rep Power: 13	Hello Foamers, I am doing a case with a heater in a cubic room. The heater could be very hot and therefore the radiation heat flux from the heater to the walls cannot be neglected. Therefore I am considering to apply a radiation model. As far as I know, OF has three radiation models: viewing factors, P1 and FVDOM. Which one is suitable for my case? and in addition how to set up boundary condition for heaters and other walls? Any reply is highly appreciated.

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May 9, 2014, 06:07		#2
chriss85 Senior Member Join Date: Oct 2013 Posts: 397 Rep Power: 18	Not sure if this is still recent. P1 is suitable for diffusive radiation in participating media which are optically thick. fvDOM is suitable when the medium is thinner and you need to capture the geometrical behavior of the radiation. I don't know too much about viewFactor method, but I believe it is only for non-participating media, don't quote me on that though.