2019•arXiv (Cornell University)Open access

On the closure requirement for VOF simulations with RANS modeling

Wenyuan Fan, Henryk Anglart

Abstract

The volume of fluid (VOF) method is increasingly used in computational fluid dynamics (CFD) simulations of turbulent two-phase flows. The Reynolds-Averaged Navier-Stokes (RANS) approach is an economic and practical way for turbulent VOF simulations. Even though RANS-VOF simulations are widely conducted, the underlying physics is barely discussed. This study reveals the very basic closure requirement for RANS-VOF simulations.

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Key concepts: Reynolds-averaged Navier–Stokes equations, Volume of fluid method, Computational fluid dynamics, Turbulence, Mechanics, Closure (psychology), Computer science, Physics