Realizable K epsilon

Altair Forum User

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 =

<?xml version="1.0" encoding="UTF-8"?>

Altair Forum User

Hi Dinesh,

 

Turbulent velocity scale : is the average velocity at the inlet 

Turbulence viscosity ratio: viscosity ratio, , is the ratio between the turbulent viscosity, , and the molecular dynamic viscosity, .

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