CLSVOF as a fast and mass-conserving extension of the level-set method for the simulation of two-phase flow problems

Abstract

The modeling of two-phase flows in computational fluid dynamics is still an area of active research. One popular method is the coupling of level-set and volume-of-fluid (CLSVOF), which benefits from the advantages of both approaches and results in improved mass conservation while retaining the straightforward computation of the curvature and the surface normal. Despite its popularity, details on the involved complex computational algorithms are hard to find and if found, they are mostly fragmented and inaccurate. In this article, we present all details on the CLSVOF method, which is fast and conserves mass excellently even on coarse grids. All in all, this article can be used as a comprehensive guide for an implementation of CLSVOF into existing level-set Navier-Stokes solvers on Cartesian grids in three-dimensions.