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-   -   Kato-Launder equation (http://www.cfd-online.com/Forums/fluent/64179-kato-launder-equation.html)

sri31049 May 1, 2009 09:47

Kato-Launder equation
 
hai

I am trying to apply the Kato-Launder k-epsilon turbulence model for my problem. So, i have to modify the production term in the standard k-epsilon model. Is it possible with UDF's? Is it possibule to impliment Kato-Launder model using UDF's? please help me in this try.

thanks in advance for ur suggestions.

pete May 2, 2009 05:06

Kato-Launder is already implemented in Fluent. You can turn it on using the text-interface commands (not the gui)

sri31049 May 2, 2009 06:51

Kato-Launder equation
 
dear pete

thankyou so much for your kind reply. i am very happy with your answer.

can you please tell me how can i found the text commands and how to activate this kato-landur equation?
is it availabule in FLUENT 6.2 also?

thanks in advance for your suggestions.

sri31049 May 3, 2009 01:59

Kato-Launder equation
 
hai peter

thanks for your advice. i enabled the Kato-Launder model with text interface comands. But i dont know where i can see it is really enabled or not?. and in summery it is showing stadard k - epsilon model but it is not showing kato - launder model is enabled or not?

please help me in this problem. i a really tnankful for ur suggestions

sri:)

pete May 3, 2009 06:12

Fluent support should be able to help you with the details. To see from the solution if Kato-Launder is active I would advice you to look at the turbulence levels in stagnation regions and in the free-stream. The k-levels in stagnation regions and regions oustside boundary and shear layers should be much lower when you have Kato-Launder active.

sri31049 May 3, 2009 07:24

Kato-Launder equation
 
hai peter

thanq so munch for ur suggestions. i will follow ur advice.
thank you so much

best regards

sri:)


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