UDF Wall functions. ANY EXPERTS?
 

Can somebody tell me how i can view macros in Fluent? i need to modify the wall functions to atmospheric boundary flows. When i looked at the example in DEFINE_WALL_FUNCTIONS, i realised that there are many reserved names for the variables Fluent uses. For example, UPLUS_LAM is the u+ in the laminar region.
I need to change the way Fluent defines Y plus. Instead of incorporating roughness height, i want it to use aerodynamic roughness length. And also, what is the reserved name for wall shear stress in the macros. Anybody knows?

hi
 

hi,
have you figure out the problems of UDF. can you please share the UDF of wall function with me for reference . i want to modified the wall function but i dont know the basics.
here is my email. mziqureshi@hotmail.com
regards