Comparison of interface capturing methods in two phase flow



 In two phase flow investigation, there is a need for robust methods capable of predicting interfaces, in addition to treating the traditional governing equations of fluid mechanics (Navier-Stokes Eqs.). Such methods in a finite volume approach can be classified into two typical categories called interface tracking and interface capturing methods. According to their abilities, interface capturing methods are of more interest in free surface modeling, especially when complex interface topologies such as wave breaking are included. These methods solve a scalar transport equation in order to find the distribution of two phases all over the computational domain. That is, all properties of the effective fluid will be calculated.
In this paper, some existing schemes will be reviewed and two high order composite schemes will be applied on a discretised form of the volume fraction convection equation. A discussion on the performance of methods will be presented as a result of different scalar distribution convection in various velocity fields according to the program that has been developed in this manner. It will be presented to show that CICSAM (Compressive Interface Capturing Scheme for Arbitrary Mesh) can be used as a good choice for free surface simulation in practice.