Hi Danica, 

So, I played around a bit and was able to see that vapour is transferred to the air domain as well. I ran the simulation at steady state and set the saturation temp at 373.15K.
However, in this case both vapour and water (liquid) are both transferred (which would not be the case in a microchannel). Is there any way to define the interface BC (liquid-air) so that only vapour is allowed to pass across?


Please see the results you requested.

Fig 1: Vapour volume fraction

Fig 2: Liquid volume fraction 

Vector plot 


Any guidance would be really appreciated.


Many thanks