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Solving interFoam 3D flow around cylinder

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Old   December 20, 2015, 12:05
Default Solving interFoam 3D flow around cylinder
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Niels D
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I'm trying to solve a self-made case for the uniform flow around a cylinder. My boundary conditions are the following:

left: one face of 3m with inlet with second face of 1m atmosphere
right: same as left but then outlet
bottom: no-slip wall
sides: slip wall
cylinder: no-slip wall
top: atmosphere

But when solving a strange thing happens at the outlet. I use an inlet velocity of 1m/s but the water height seems to be decreasing in the end (see figure).

What can be the cause of this?

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