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Dinesh_

Realizable K epsilon

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Hi all

 

For using Realizable K epsilon Turbulence model .If i use  intensity and viscosity ratio

What will be the optimum value of  below said parameters for Internal flows

Turbulent velocity scale =

Turbulent viscosity ratio =

Viscosity ratio.JPG

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Hi Dinesh,

 

Turbulent velocity scale : is the average velocity at the inlet 

Turbulence viscosity ratio: viscosity ratio, \frac{\mu_t}{\mu}, is the ratio between the turbulent viscosity, \mu_t, and the molecular dynamic viscosity, \mu.

The turbulent viscosity ratio is directly proportional to the turbulent Reynolds number. Typically, the turbulence parameters are set between 1 to 10. here viscosity ratio 10 is good enough.

 

Regards

Ravi Harti

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