I am now solving cavity problem in 3D. for turbulence model, I selected RANS and k-epsilon. for wall function, I selected nutkwallfunction. However, I could not find the procedure (how the wall function is defined) used in this type of wall function. I would be grateful if you could tell me what specific wall function is used in nutkwallfunction. I realized that the way that wall functions are defined can be followed just from the C++ code. Is there any clear written explanation and procedure on the nutkwallfunction behavior?!
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