[arianam]

Geometry: a closed pipe half filled with liquid and half with its vapour.

B.C.: higher temperature is applied to the wall

Solver: twoPhaseEulerFoam or more accurately reacting twophaseEulerFoam

Problem: the interface is gone after some time steps. In other words, there is some kind of mixing between phases that is not physical(figure show alpha.vapor for t=0s and then t=42s).

I tried different refined mesh without success.

Any suggestion?
dragModel? phase inversion problem? blending?

Thanks in advance