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Old   May 1, 2009, 08:47
Default Kato-Launder equation
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paaresh
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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.
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Old   May 2, 2009, 04:06
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Peter Jones
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Kato-Launder is already implemented in Fluent. You can turn it on using the text-interface commands (not the gui)
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Old   May 2, 2009, 05:51
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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.
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Old   May 3, 2009, 00:59
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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
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Old   May 3, 2009, 05:12
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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.
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Old   May 3, 2009, 06:24
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hai peter

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

best regards

sri
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