6.2.28 Hooking DEFINE_WALL_FUNCTIONS UDFs

After you have interpreted (Chapter  4) or compiled (Chapter  5) your DEFINE_WALL_FUNCTIONS UDF, the name of the function you supplied as a DEFINE macro argument will become visible and selectable in the Viscous Model dialog box (Figure  6.2.37) in ANSYS FLUENT.

Models Viscous Edit...

Figure 6.2.37: The Viscous Model Dialog Box

To hook the UDF, select k-epsilon from the Model list in the Viscous Model dialog box, and select User-Defined Wall Functions from the Near-Wall Treatment list. Then, select the function name (e.g., user_log_law::libudf) from the Law of the Wall drop-down list, and click OK.

See Section  2.3.28 for details about defining DEFINE_WALL_FUNCTIONS functions in ANSYS FLUENT.