Modelling turbulence dynamics at the free surface of horizontal two phase flows

Höhne, T.

Abstract

Limits today in simulating horizontal two phase flow: no special turbulence treatment at the surface Turbulence Damping,
Introduction of a symmetric damping procedure (Egorov) for the solid wall-like damping of turbulence in both gas and liquid phases Subgrid wave turbulence (SWT),
Waves created by Kelvin-Helmholtz instabilities that are smaller than the grid size are neglected - Influence on the turbulence kinetic energy of the liquid side can be significantly large,
A region of marginal breaking is defined according Brocchini and Peregrine (2001) and added as a source term in the turbulent kinetic energy equation,
Verification and Validation is going on – more experimental data are required for the validation

Keywords: AIAD; CFD; Horizontal Flow; SWT

Involved research facilities

Lecture (Conference)
CFD-Verbundtreffen, 06.-07.03.2013, Garching, Deutschland

Permalink: https://www.hzdr.de/publications/Publ-18470