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k-epsilon

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Old   February 14, 2008, 05:37
Default k-epsilon
  #1
Dan
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Hi,

To calculate k, I have found that k=(3/2)(uI)^2 where I is the turbulence intensity. However, how to estimate the turbulence intensity with regards to airfoils if I have no actual data.

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Old   February 14, 2008, 15:48
Default Re: k-epsilon
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NRD
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Typically for a Re=50,000, the turbulent intensity is 10%. You can also estimate I based on the definition that I=u_rms/u_mean. Hope this helps.
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