Modelling a Water-Air bubble column
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Greetings foamers,
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? |
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.
Best, |
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