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Direct Numerical Computation of the Lift Force acting on Single Bubbles

Bothe, D. and Schmidtke, M. and Warnecke, H.-J. (2007):
Direct Numerical Computation of the Lift Force acting on Single Bubbles.
In: 6th International Conference on Multiphase Flow, ICMF2007, Leipzig, In: paper S1TueD26, [Conference or Workshop Item]

Item Type: Conference or Workshop Item
Erschienen: 2007
Creators: Bothe, D. and Schmidtke, M. and Warnecke, H.-J.
Title: Direct Numerical Computation of the Lift Force acting on Single Bubbles
Language: English
Series Name: paper S1TueD26
Uncontrolled Keywords: rise of bubbles, lift coefficient, Volume of Fluid method, shear flow
Divisions: 04 Department of Mathematics > Mathematical Modelling and Analysis
UNSPECIFIED
Zentrale Einrichtungen
04 Department of Mathematics
Event Title: 6th International Conference on Multiphase Flow, ICMF2007
Event Location: Leipzig
Date Deposited: 12 Apr 2011 12:53
Alternative Abstract:
Alternative abstract Language
Bubbles in shear flows experience a lift force, causing them to migrate sideward while they are rising. This lateral migration is also observed in numerical simulations, which are carried out with an extended version of the highly parallelized code FS3D, employing an advanced Volume-of-Fluid method. The movement of single bubbles in linear shear flows is simulated to obtain the magnitude of the lift force – expressed by the lift force coefficient CL – for various bubble diameters and material data. Simulation results are in good agreement with experiments for medium liquid phase viscosities. The pressure and the velocity fields near the interface are investigated and the contribution of dynamic pressure and the circulation of the lift force are discussed.English
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