On a new method for regularizing equations two-phase incompressible fluid

Abstract

This paper presents a new method for the numerical simulation of two-phase incompressible immiscible flows. The methodology is based on the hydrodynamic equations regularization method using the quasi-hydrodynamic approach. Two systems of regularized equations are developed, which differ in terms of velocity regularization. The comparison of the described equations systems and the approbation of the numerical model on two numerical tests are given: dam break problem with the bottom step, for which the experimental data are described (Koshizuka’s experiment), and the cubic drop evolution problem. The latter problem is a model one with artificially specified parameters that demonstrates the effects of surface tension. A numerical model of two-phase flows is implemented in the open-source platform OpenFOAM using the finite volume method.

An extension of the all-Mach number pressure-based solution framework for numerical modelling of two-phase flows with interface

“…The ability of the developed solver to model complex gas-liquid interfacial flows at low Mach number conditions is validated using the dam break problem [48]. The case setup was obtained from the numerical study [49] (Fig. 12).…”

An Extension of the All-Mach Number Pressure-Based Solution Framework for Numerical Modelling of Two-Phase Flows with Interface

“…The ability of the developed solver to model complex gasliquid interfacial flows at low Mach number conditions is validated using the dam break problem 48 . The case setup was obtained from the numerical study 49 (Fig. 3).…”