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

Alke, A. ; Bothe, D. ; Kröger, M. ; Weigand, B. ; Weirich, Dominik ; 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, 82
Article, Bibliographie

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. ; Simonin, O.
Creators: Alke, A. ; Bothe, D. ; Kröger, M. ; Weigand, B. ; Weirich, Dominik ; Weking, H.
Type of entry: Bibliographie
Title: Direct numerical simulation of high Schmidt number mass transfer from air bubbles rising in liquids using the Volume-of-Fluid-Method
Language: English
Date: 2010
Journal or Publication Title: Ercoftac Bulletin
Volume of the journal: 82
Book Title: Ercoftac Bulletin
Series: special issue „Dispersed Multiphase Flow: From Micro- to Maco-Scale Numerical Modelling“
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

Divisions: Exzellenzinitiative
Exzellenzinitiative > Clusters of Excellence
Exzellenzinitiative > Graduate Schools
Exzellenzinitiative > Graduate Schools > Graduate School of Computational Engineering (CE)
04 Department of Mathematics
04 Department of Mathematics > Analysis
04 Department of Mathematics > Analysis > Mathematical Modeling and Analysis
Zentrale Einrichtungen
Exzellenzinitiative > Clusters of Excellence > Center of Smart Interfaces (CSI)
04 Department of Mathematics > Mathematical Modelling and Analysis
Date Deposited: 05 Apr 2011 12:31
Last Modified: 07 Feb 2024 11:55
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