Comparison of interface capturing methods for the simulation of two-phase flow in a unified low-Mach framework

This paper proposes a comparison of four popular interface capturing methods : the volume fluid (VOF), standard level set (SLS), accurate conservative (ACLS) and coupled (CLSVOF). All are embedded into unified low-Mach framework based on Cartesian-grid finite-volume discretization. includes sharp transport interface, well-balanced surface tension discretization consistent mass momentum which allows capillary-driven simulations with high density ratio. The relies shared metrics for geometrical accuracy, conservation exposes weakness strengths each method. Finally, versatility capabilities proposed solver demonstrated simulation 3D head-on collision two water droplets. Overall, all manage to retrieve reasonable results test cases presented. VOF, CLSVOF ACLS tend artificially create little structures while SLS suffers from issues in mesh resolution limit. study leads us conclusion that is most promising method two-phase flow our specific because its inherent properties topology accuracy.