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BC for fully developed turbulent flow in a pipe

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Old   May 21, 2009, 14:47
Post BC for fully developed turbulent flow in a pipe
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Mubarak
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Dear All,

Please can anyone help me with the equation of the velocity profile for a fully developed turbulent flow in a pipe.

I am working on 3D flow in a pipe and i want to apply fully developed turbulent BC at the inlet. I need the equation for the velocity profile.

Thanks
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Old   May 22, 2009, 07:45
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Dmitry
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Hi!
I suggest another way to solve your problem.
At first stage you can set uniform flow at inlet with turb. parameters such: intensity=5% and viscosity ratio=5 (if you are using two equation model). Get fully converged solution and write velocity and turbulence variables profile at pipe outlet.
At second stage, just set this profile at pipe inlet.
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Old   May 22, 2009, 07:50
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Thanks Dmitry for your reply. I am going to simulate many velocities of the flow and different mesh sizes. will one case be used for all the above cases.
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