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Turbulence-Interface Interaction in Large-Eddy Simulations with a Two-Fluid Model

Meller, R.; Klein, M.; Lucas, D.; Schlegel, F.

Abstract

With the aim of a generalized model framework for two-phase flows, cases with large scale interfaces are modeled by means of a two-fluid model in the manner of large-eddy simulations. In this context a number of unclosed terms due to the filtering operation arise. One of them is the classical convective sub-grid scale turbulence stress term. Different closure models for the convective sub-grid scale term are adapted to the presented model framework and a-posteriori investigations are carried out in order to compare the influence of the different modeling approaches.

Keywords: computational fluid dynamics; two-fluid model; large-eddy simulation; multiphase; rising bubble

Verknüpfte Publikationen

  • Beitrag zu Proceedings
    12th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements, 26.-28.09.2018, Montpellier, Frankreich
  • Vortrag (Konferenzbeitrag)
    12th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements, 26.-28.09.2018, Montpellier, Frankreich

Permalink: https://www.hzdr.de/publications/Publ-28472