TU Darmstadt / ULB / TUbiblio

Direct numerical simulation of high Schmidt number mass transfer from air bubbles rising in liquids using the Volume-of-Fluid-Method

Alke, A. and Bothe, D. and Kröger, M. and Weigand, B. and Weirich, Dominik and Weking, H.
Direct numerical simulation of high Schmidt number mass transfer from air bubbles rising in liquids using the Volume-of-Fluid-Method.
In: Ercoftac Bulletin, pp. 5-10, 82, [Article]

Abstract

We present a combined VOF-based approach for the direct numerical simulation of mass transfer across deformable fluidic interfaces in 3D. For this purpose and in order to resolve all relevant length scales for moderate Reynolds and Schmidt numbers in convection dominated cases, several computational techniques are employed. In particular, we build on a subgrid-scale model for the concentration boundary layer at the interface, a moving frame of reference technique, and a local mesh refinement around the bubble. Furthermore, we show a first result employing so-called artificial boundary conditions to reduce the size of the computational domain in lateral direction

Item Type: Article
Erschienen: 2010
Editors: Sommerfeld, M. and Simonin, O.
Creators: Alke, A. and Bothe, D. and Kröger, M. and Weigand, B. and Weirich, Dominik and Weking, H.
Title: Direct numerical simulation of high Schmidt number mass transfer from air bubbles rising in liquids using the Volume-of-Fluid-Method
Language: English
Abstract:

We present a combined VOF-based approach for the direct numerical simulation of mass transfer across deformable fluidic interfaces in 3D. For this purpose and in order to resolve all relevant length scales for moderate Reynolds and Schmidt numbers in convection dominated cases, several computational techniques are employed. In particular, we build on a subgrid-scale model for the concentration boundary layer at the interface, a moving frame of reference technique, and a local mesh refinement around the bubble. Furthermore, we show a first result employing so-called artificial boundary conditions to reduce the size of the computational domain in lateral direction

Journal or Publication Title: Ercoftac Bulletin
Title of Book: Ercoftac Bulletin
Series Name: special issue „Dispersed Multiphase Flow: From Micro- to Maco-Scale Numerical Modelling“
Volume: 82
Divisions: Exzellenzinitiative > Clusters of Excellence > Center of Smart Interfaces (CSI)
04 Department of Mathematics > Mathematical Modelling and Analysis
Zentrale Einrichtungen
04 Department of Mathematics
Exzellenzinitiative
Exzellenzinitiative > Clusters of Excellence
Exzellenzinitiative > Graduate Schools > Graduate School of Computational Engineering (CE)
Exzellenzinitiative > Graduate Schools
Date Deposited: 05 Apr 2011 12:31
Export:
Suche nach Titel in: TUfind oder in Google

Optionen (nur für Redakteure)

View Item View Item