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Set velocity boundary conditions

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Old   December 10, 2014, 11:38
Default Set velocity boundary conditions
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mike
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Hi,

I draw a cylinder in a empty mesh with SnappyHexMesh and now i want to set the boundary condition for this cylinder.
It's a rotating cylinder around its axis with constant velocity ( in modulus).

How can i set a constant rotational velocity in the "U" file of the "0 " folder?

thanks a lot!
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