adding k+ through UDF -- CFD Online Discussion Forums

April 24, 2018, 12:19	adding k+ through UDF	#1
Shamoon Jamshed Senior Member Shamoon Jamshed Join Date: Apr 2009 Location: Karachi Posts: 377 Rep Power: 18	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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