difference beetween phases and species
 

I have water liquid , water wapor, and air. If i use multiphase model ( mixture ) how many phase have i to specify? And how many species in species transport? thanks

Re: difference beetween phases and species
 

You can specify two phases. one water phase and other a mixture of water-vapor and air.

The response of water-vapor and air are similar, so they can be treated as a single phase , mixture with two species.