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adding k+ through UDF

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Old   April 24, 2018, 12:19
Default adding k+ through UDF
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Shamoon Jamshed
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Hi,

I want to induce a k+ equation in UDF for improving k+ vs y+ profile for a channel flow. I have not idea how to do it in Fluent software. Can anyone please help?

The formula is

k+ = B y+^2 e^(-y+/A)

where B = f(Re_tau) and values are available for B at some Re_Tau . A= 8
Re_tau= u_tau (channel height)/nu, U_tau = sqrt(Tau/rho) .
I am new to UDF that is why need your help guys.

Regards,
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