[siden]

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]

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.