Turbulence Intensity at inlet boudary

egge24 · February 2, 2015, 18:34

Hi everybody,

I will appreciate if anyone can help me with the following doubt.

I am modeling a rectangular channel with an inlet velocity boundary condition and a pressure outlet. I set the turbulence method of the inlet to "intensity and viscosity ratio" with a value of 10 for both parameter. When I plot a countour map of the turbulence intensity at the inlet surface, its value is under 10%.

Does anyone why is this happening?

Thank you.

Best regards,

egge24

amine hero · October 10, 2015, 16:56

i think to use the intensty and hydraulic diametry Dh and I
it is
I=sqrt(2*K/3) with k is the kentic turbulent energy

February 2, 2015, 18:34	Turbulence Intensity at inlet boudary	#1
egge24 Member Join Date: Jan 2011 Posts: 45 Rep Power: 15	Hi everybody, I will appreciate if anyone can help me with the following doubt. I am modeling a rectangular channel with an inlet velocity boundary condition and a pressure outlet. I set the turbulence method of the inlet to "intensity and viscosity ratio" with a value of 10 for both parameter. When I plot a countour map of the turbulence intensity at the inlet surface, its value is under 10%. Does anyone why is this happening? Thank you. Best regards, egge24

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October 10, 2015, 16:56		#2
amine hero New Member amine heroual Join Date: Oct 2015 Posts: 4 Rep Power: 11	i think to use the intensty and hydraulic diametry Dh and I it is I=sqrt(2*K/3) with k is the kentic turbulent energy