Moisture calculation in COMSOL
 

Dear All,

I'm simulating the evaporation of a droplet in a humid air, and I have found that it changes depending of the initial moisture levels and the moisture from the inlet.

So I want to know how can be calculated the initial moisture in the system and the inlet in mol/m3. For now I tried the ideal gases law but the air enters at 85 degrees and for that reason it obtains a very high concentration.

So how can be calculated in terms of mol/m3 at 25 and 85 degrees for a absolute humidity of 0.01 kg/kg?

Thanks for all