A.4 Hooking a Heterogeneous Reaction Rate UDF to ANSYS FLUENT

After the UDF that you have defined using DEFINE_HET_RXN_RATE is interpreted or compiled (see the Fluent UDF Manual for details), the name that you specified in the DEFINE macro argument (e.g., arrh) will become visible and selectable under Reaction Rate Function in the Reactions tab of the Phase Interaction dialog box. (Note you will first need to specify the Total Number of Reactions greater than 0.)