Is there any way to simulate the CO2 produced by one person?, for example, I have a domain with Air at 25ºC and I'd like to set a cilinder (person) as an inlet of CO2 at some specific rate. Same for humidity, can I do that? How? Thanks for ur posts

you can easily create additional variable, set it to be computed with transport equation. you can define as much variables as you want, set the sources of them, whatever. look into the tutorials with examples to set add. variables.

matej

Create your additional mass fractions for H2O and CO2 as matej pointed out above.

If the "person" is a solid cylinder, it will have walls on which you can specify a source per unit area. If it is an open volume (ie. subdomain) set a volumetric source for your mass fractions.

Jeff

I've already added the new variables for CO2 and H2O, but the do not increase ther levels through time, why is that? the units I set for them were time dependent, is there anything I'm missing?

you setup the unit for CO2 concentration as mole/sec ? or kg/sec?

no no, you need to setup the unit mass less (as a fraction ,a or just moles or kg or pounds whatever, and you need to set the source after setting the variables for CO2 and H2O as transport variables.

if it goes OK, there is no reason, why you should not have some concentration of the scalars in the volume. Do not forget to set some diffusion if you want them to diffuse...

matej