Hello,

Do you know any continuous function for "fluid" wall-law covering viscous sub-layer and logarithmic zone at the same time ? (like Kader's law, for temperature)

Patrick

From my understanding, FLUENT's Enhanced Wall Treatment blends a two-zonal model with an enhanced wall function. The enhanced wall function used there is a continuous wall law, obtained by blending the viscous sublayer and log-law regions. The exact details are in the FLUENT manual (look under the section on enhanced wall treatment), but essentially it's just a simple blending function.

Hope that helps, Brian

Thanks you very much....this is exactly what I was looking for Yours, Patrick

Tsan-Hsing Shih et al 2003 J. Turbulence 4 015

Application of generalized wall function for complex turbulent flows

http://www.iop.org/EJ/abstract/1468-5248/4/1/015/

"... generalized wall function is extended to the whole surface layer (or inner layer), covering the viscous sublayer, buffer layer and inertial sublayer; therefore, it is a unified wall function."