question about changing phaze

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1

Dear lammps users and developers
I am trying to change phase from liquid to gas and gas to liquid (argon) for my simulation (heat pipe).
I need to do this in one cube (evaporate from one side and condense opposite side) and gas must move from evaporating side to condensing (opposite) side, and liquid must move form condensing side to evaporating side (opposite). It’s a cycle for transferring heat and energy.
I don’t know how to evaporate and condense argon, this is my major problem. so would you please give me a way to simulate it?

Thank you and have a great time.
shahab

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Dear lammps users and developers
I am trying to change phase from liquid to gas and gas to liquid (argon) for my simulation (heat pipe).

​how large a heat pipe are we talking about here? how large would the encompassing medium be?
is this something for which experimental precedence exists where you can observe the heat transfer of objects of the same size?

in my experience, to see the actual physical process happening, you would need cover length and time scales that are not accessible for atomic scale MD simulations.

axel.