6.3.3 Hooking DEFINE_HET_RXN_RATE UDFs

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

To hook the UDF, first make a selection from the Model list of the Multiphase Model dialog box.

Models Multiphase Edit...

Next, select Species Transport from the Model list of the Species Model dialog box.

Models Species Edit...

Then open the Phase Interaction dialog box (Figure  6.3.5).

Phases Interaction...

Figure 6.3.5: The Phase Interaction Dialog Box

Click the Reactions tab and enter a nonzero number in the Total Number of Heterogeneous Reactions text box. Select the function name (e.g., user_evap_condens_react::libudf) from the Reaction Rate Function drop-down list and click OK.

See Section  2.4.3 for details about writing DEFINE_HET_RXN_RATE functions.