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Estimation of turbulence length scale

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Old   April 28, 2015, 07:16
Default Estimation of turbulence length scale
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Jason
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Hi, FOAMers

I need some advise for estimating turbulence length scale to calculate epsilon.

I have searched cfd-online to find answers and found guide line about turbulence intensity. But, I couldn't find guide lines about turbulence length scale.

I already read these links
for turbulence free stream boundary conditions
(http://www.cfd-online.com/Wiki/Turbu...ary_conditions)
for turbulence intensity
(http://www.cfd-online.com/Wiki/Turbulence_intensity)
for turbulence length scale
(http://www.cfd-online.com/Wiki/Turbulent_length_scale)

I'm trying to run LTSinterFoam to calculate hull resistance. turbulence model is standard k-epsilon.
Simulation hull model is KCS hull of 1/58 scale.
Re number is 1.7e7.

well, I think tubulence intensity would be lower than 1% (may be 0.5%?).
Now, to calculate epsilon, I need some advise for estimating turbulence length scale.
I hope someone could give me an advise
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