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Old   November 12, 2003, 07:01
Default Turbulence Intensity
  #1
Tom
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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?
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Old   November 12, 2003, 07:50
Default Re: Turbulence Intensity
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eric
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Hi,

You can used the following

I = 0.16*Re^-1/8

Also see 6.2.2 in the Fluent manual

Eric
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Old   November 12, 2003, 07:55
Default Re: Turbulence Intensity
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prasanth
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Dear Eric, Then what will be the Intesity for natural convection, where Rayleigh number is criteria.
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Old   November 14, 2003, 08:07
Default Re: Turbulence Intensity
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B. David
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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
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Old   November 14, 2003, 10:53
Default Re: Turbulence Intensity
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eric
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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.

Regards

Eric
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