2.7 User-Defined Scalar (UDS) Transport Equation DEFINE Macros

This section provides information on how you can define UDFs that can be used in UDS transport equations in ANSYS FLUENT. See this section in the separate User's Guide for UDS equation theory and details on how to setup scalar equations. Descriptions of DEFINE macros for UDS applications are provided below. Definitions of DEFINE macros are contained in the udf.h header file. For your convenience, they are also listed in Appendix  B. Detailed examples of user-defined scalar transport UDFs can be found in Section  8.2.5.