6.2.7 Hooking DEFINE_EMISSIVITY_WEIGHTING_FACTOR UDFs

After you have interpreted (Chapter  4) or compiled (Chapter  5) your DEFINE_EMISSIVITY_WEIGHTING_FACTOR UDF, the name of the function you supplied as a DEFINE macro argument will become visible and selectable in the User-Defined Function Hooks dialog box (Figure  6.2.9) in ANSYS FLUENT.

In the Radiation Model dialog box, Discrete Ordinates (DO) must be selected from the Model list, and a nonzero value must be entered for Number of Bands in the Non-Gray Model group box.

To hook the UDF to ANSYS FLUENT, open the User-Defined Function Hooks dialog box. (Figure  6.2.9)

Define $\rightarrow$ User-Defined $\rightarrow$ Function Hooks...

Figure 6.2.9: The User-Defined Function Hooks Dialog Box

Select the function name (e.g., em_wt::libudf) in the DO Emissivity Weighting Factor drop-down list in the User-Defined Function Hooks dialog box, and click OK.

See Section  2.3.7 for details about defining DEFINE_EMISSIVITY_WEIGHTING_FACTOR UDFs.