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interFOAM: different results for similar meshes

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Old   January 31, 2017, 18:03
Post interFOAM: different results for similar meshes
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Bram De Jaegher
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Hi all,

I've been struggling with a interFOAM case for two weeks now. It is basically tank that is partially filled with water. I made about 60 different meshes (finer and coarser meshes in all directions) but only one seems to run stable (read: the velocity stays zero as it should). For the other cases the interface starts showing high parasitic currents (pictures).

I tried a lot of schemes and solvers but it looks like problem is the mesh. Can anybody explain me what I'm missing here, both meshes are very similar (all meshes I tried were very similar) but have very different results

Both cases can be found at!AjtgbxIopt9chJJq8-APpouwj31bQQ
I use OF4 atm but OF3 also gives the same results
Attached Images
File Type: png workingMesh.png (47.2 KB, 24 views)
File Type: png unstableMesh.png (101.4 KB, 25 views)

Last edited by bramDeJaegher; February 1, 2017 at 03:39.
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interfoam, parasitic currents, unstable

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