combustion radiation and condensation in cfx

siden · February 3, 2011, 05:33

Hello,

I hat to modelling a condensation heater with ansys.
actually, i'm using cfx.

So i must have a modelisation of the combustion, condensation in the smoke area, heat exchange between smoke area, steel and water cooling area. And the final temperature of the smoke should create condensation so i have to model the condensation too.

which model do i have to use for that? i look a bit in cfx for condensation. I read on the cfx manual have to have a droplet phase for condensation in more than a continuous phase (gas combustion). But when i have this phase, radiation can't be activated.

so how can i do?

ghorrocks · February 3, 2011, 18:39

You are describing a very challenging model. Why are you modelling everything? I think you will find you will get much better results if you concentrate on the bit you are really interested in and model that properly.

February 3, 2011, 05:33	combustion radiation and condensation in cfx	#1
siden New Member Denis Join Date: Jan 2011 Posts: 6 Rep Power: 15	Hello, I hat to modelling a condensation heater with ansys. actually, i'm using cfx. So i must have a modelisation of the combustion, condensation in the smoke area, heat exchange between smoke area, steel and water cooling area. And the final temperature of the smoke should create condensation so i have to model the condensation too. which model do i have to use for that? i look a bit in cfx for condensation. I read on the cfx manual have to have a droplet phase for condensation in more than a continuous phase (gas combustion). But when i have this phase, radiation can't be activated. so how can i do?

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February 3, 2011, 18:39		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	You are describing a very challenging model. Why are you modelling everything? I think you will find you will get much better results if you concentrate on the bit you are really interested in and model that properly.