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Tom November 12, 2003 07:01

Turbulence Intensity
How do I calculate the turbulence intensity at the inlet of my pipe section to apply as a boundary condition. The pipe is 203mm in diameter and I know the reynolds number is 8.58e+06. Do I need to know any other information to calculate this?

eric November 12, 2003 07:50

Re: Turbulence Intensity

You can used the following

I = 0.16*Re^-1/8

Also see 6.2.2 in the Fluent manual


prasanth November 12, 2003 07:55

Re: Turbulence Intensity
Dear Eric, Then what will be the Intesity for natural convection, where Rayleigh number is criteria.

B. David November 14, 2003 08:07

Re: Turbulence Intensity
eric, can u name the reference for this correlation, n if u know the correlation for turbulent dissipiation rate.plz let me know. thanks for this information. david

eric November 14, 2003 10:53

Re: Turbulence Intensity
I'm sorry have no experience with natural convection problems so i can't tell you anything about the turbulence intensity.

I just referred to the fluent manual 6.2.2 for this intensity formula.



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