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Old   February 6, 2003, 13:04
Default Inlet Turbulence
Yazhuo Qian
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To set the Inlet Turbulence in Phoenics 3.4, one could either set the inlet turbulence intensity, or set the KEin and EPin, If I choose to set inlet turbulence intensity, how the Phoenics treat with that condition?

I think it may use the equation: KEin=3*(Ti*U)**2/2, to get KEin. If I am right, what about EPin?
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Old   February 14, 2003, 03:02
Default Re: Inlet Turbulence
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I agree with you. EPin can be calculated from the following relationship:

Epin= C^(3/2)* (K^(3/2))/L

where c=constant=0.01-0.1

L=Reference length (e.g. 0.05 D duct)

Regards Neihad
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Old   March 28, 2003, 07:43
Default Re: Inlet Turbulence
John Ludwig, CHAM
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The inlet turbulence is set as follows:

KEin = ((I/100)*VELin)^2

where I is the intensity in % and VELin is the inlet velocity

EPin = 0.164*(KEin^1.5)/(0.1*l)

where l is half the minimum inlet dimension.
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