Page "Computational fluid dynamics" Paragraph 55

The modeling of two-phase flow is still under development.

Different methods have been proposed.

The Volume of fluid method has received a lot of attention lately, for problems that do not have dispersed particles, but the Level set method and front tracking are also valuable approaches.

Most of these methods are either good in maintaining a sharp interface or at conserving mass.

This is crucial since the evaluation of the density, viscosity and surface tension is based on the values averaged over the interface.

Lagrangian multiphase models, which are used for dispersed media, are based on solving the Lagrangian equation of motion for the dispersed phase.