Basic heat definition question

dren · October 8, 2013, 15:30

Hi,

I have been doing conjugate heat transfer problems on cfx and I have been defining heat generation on my pipes using the subdomain feature. I select all the pipes in the subdomain and specify source as 1000 W/m3.

My question is, do all the pipes get 1000 W/m3 or does 1000W/m3 get divided equally among the pipes which I have selected.

I think it gets 1000W/m3 each, but I just want to make sure.

Thanks for reading.

ghorrocks · October 8, 2013, 17:51

Make sure you understand the unit - it is W/m^3. So it is a heat source per unit volume, which means whatever you select will get the same heat source per unit volume applied all over it. It does not get "split up" - that is not meaningful for that unit.

October 8, 2013, 15:30	Basic heat definition question	#1
dren New Member Join Date: Oct 2013 Posts: 9 Rep Power: 12	Hi, I have been doing conjugate heat transfer problems on cfx and I have been defining heat generation on my pipes using the subdomain feature. I select all the pipes in the subdomain and specify source as 1000 W/m3. My question is, do all the pipes get 1000 W/m3 or does 1000W/m3 get divided equally among the pipes which I have selected. I think it gets 1000W/m3 each, but I just want to make sure. Thanks for reading.

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October 8, 2013, 17:51		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	Make sure you understand the unit - it is W/m^3. So it is a heat source per unit volume, which means whatever you select will get the same heat source per unit volume applied all over it. It does not get "split up" - that is not meaningful for that unit.