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Verifying Backward Facing Step for Re = 22,100

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Old   May 30, 2017, 02:23
Default Verifying Backward Facing Step for Re = 22,100
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I am trying to simulate the cold flow in a 3D pitz-daily geometry with XiFoam solver without any combustion, similar to one in this paper:

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In 2d pitz-daily tutorials available in the OpenFOAM when the solution is animated instantaneous formation of recirculation bubbles is seen constantly, for example:

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But in my case after the first bubble is formed it kind of "dissolves" and I end up with a jet-like flow. Is this normal for such high Re numbers or am I missing something in my discretization schemes or boundary conditions.

Uploading my case with a solution with a small animation if anyone is interested to make a comment.

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