|February 27, 2012, 14:21||
Modelling a Water-Air bubble column
Join Date: Feb 2012
Posts: 195Rep Power: 17
I try to simulate a water-air bubble column like the becker test-case (Becker et al. 1999: flat bubble column, single gas-sparger in the centre of the bottom)
The mesh is easily built using blockMesh. I attached a screenshot of the mesh.
The solver I use is twoPhaseEulerFoam.
My questions are:
Which dragModels are recommended for gas bubble - water eulerian simulation?
Are there any changes that have to be made when starting from one of the tutorial cases?
|February 28, 2012, 05:12||
Join Date: Mar 2009
Location: Ames, Iowa, United States
Posts: 1,910Rep Power: 27
The standard drag model used for that test cases by many authors in the literature is Schiller-Neumann, and the drag phase is the dispersed one (air). OpenFOAM defaults to the "blended" model, which is more stable when phase separation occurs.
GeekoCFD - A free distribution based on openSUSE 64 bit with CFD tools, including OpenFOAM. Available as in both physical and virtual formats.
OpenQBMM - An open-source implementation of quadrature-based moment methods.
To obtain more accurate answers, please specify the version of OpenFOAM you are using.
|water-air bubble column|
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