Modelling of Heat Transport in Two-phase Flow and of Mass Transfer Between Phases Using the Level-set Method

We describe mathematical models for heat transport and for mass transfer between phases due to vaporization and condensation. These models have been implemented in a framework for detailed two-phase flow calculations based on the level-set method. For two simple cases we show that simulated results agree with the corresponding analytical solutions and we demonstrate first-order convergence of the implemented methods. We also simulate a more physically realistic, three-dimensional case that is assumed rotationally symmetric around an axis. In this case, a droplet of liquid methane is vaporized and it is shown that the model yields results that are consistent with qualitative expectations.