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Direct Numerical Simulation of Bubble Dynamics and Transfer Processes in Pure and Contaminated Systems

Bothe, D. and Alke, A. (2008):
Direct Numerical Simulation of Bubble Dynamics and Transfer Processes in Pure and Contaminated Systems.
In: 6th Int. Conf. on Computational Fluid Dynamics in the Oil & Gas, Metallurgical and Process Industries, Trondheim/Norway, [Conference or Workshop Item]

Item Type: Conference or Workshop Item
Erschienen: 2008
Creators: Bothe, D. and Alke, A.
Title: Direct Numerical Simulation of Bubble Dynamics and Transfer Processes in Pure and Contaminated Systems
Language: English
Uncontrolled Keywords: Direct Numerical Simulation, VOF-method, bubble hydrodynamics, Reactive mass transfer, Surfactant.
Divisions: 04 Department of Mathematics > Mathematical Modelling and Analysis
UNSPECIFIED
Zentrale Einrichtungen
04 Department of Mathematics
Event Title: 6th Int. Conf. on Computational Fluid Dynamics in the Oil & Gas, Metallurgical and Process Industries
Event Location: Trondheim/Norway
Date Deposited: 05 Apr 2011 14:14
Alternative Abstract:
Alternative abstract Language
Bubbly flows in Chemical Engineering systems are typically accompanied by transfer of chemical components from one phase to the other, often followed by chemical reaction. CFD models such as the Euler-Euler or the Euler-Lagrange model require the modelling of closure terms which account for the exchange of mass, momentum, species mass etc. between the phases. This requires a detailed understanding of the hydrodynamics and mass transfer especially at single bubbles. Here, Direct Numerical Simulations based on the continuum mechanical models have recently become a helpful complement to the experimental investigations needed for the derivation of such closures terms. This paper reports on current numerical approaches for the Direct Numerical Simulation of single bubble dynamics both in a clean liquid and in a surfactant solution, as well as on reactive mass transfer at a rising bubble.English
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