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: special issue „Dispersed Multiphase Flow: From Micro- to Maco-Scale Numerical Modelling“, In: Ercoftac Bulletin, 82, pp. 5-10. [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. ; Simonin, O. |
| Creators: | Alke, A. ; Bothe, D. ; Kröger, M. ; Weigand, B. ; Weirich, Dominik ; 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 |
| Book Title: | Ercoftac Bulletin |
| Series: | special issue „Dispersed Multiphase Flow: From Micro- to Maco-Scale Numerical Modelling“ |
| Volume of the journal: | 82 |
| Divisions: | Exzellenzinitiative Exzellenzinitiative > Clusters of Excellence Exzellenzinitiative > Graduate Schools Exzellenzinitiative > Graduate Schools > Graduate School of Computational Engineering (CE) 04 Department of Mathematics 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 |
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