Reply To: Multiphase with different phase zone condition

[Rob]

Initial conditions are just that, a starting point. In your model, if you have porous media as part of the heat pipe I might initialise as all gas/liquid and then patch the porous/open regions as liquid/gas respectively depending the total mass of material in the device. Note, you will need a compressible gas and these models are NOT trivial - I'd be working with another colleague for this sort of problem as there are several aspects that may require a better theoretical knowledge of the code. That level of assistance is well beyond what we can cover on the Forum.