2.5 Discrete Phase Model (DPM) DEFINE Macros

This section contains descriptions of DEFINE macros for the discrete phase model (DPM). Table  2.5.1 provides a quick reference guide to the DPM DEFINE macros, the functions they define, and the dialog boxes where they are activated in ANSYS FLUENT. Definitions of each DEFINE macro are contained in the udf.h header file. For your convenience, they are listed in Appendix  B.

Table 2.5.1: Quick Reference Guide for DPM-Specific DEFINE Macros

Function	DEFINE Macro	Dialog Box Activated In
particle state at boundaries	DEFINE_DPM_BC	boundary condition (e.g., Velocity Inlet)
body forces on particles	DEFINE_DPM_BODY_FORCE	Discrete Phase Model
drag coefficients between particles and fluid	DEFINE_DPM_DRAG	Discrete Phase Model
erosion and accretion rates	DEFINE_DPM_EROSION	Discrete Phase Model
heat and mass transfer of multicomponent particles to the gas phase	DEFINE_DPM_HEAT_MASS	Set Injection Properties
initializes injections	DEFINE_DPM_INJECTION_INIT	Set Injection Properties
custom laws for particles	DEFINE_DPM_LAW	Custom Laws
modifies what is written to the sampling plane output	DEFINE_DPM_OUTPUT	Sample Trajectories
material properties	DEFINE_DPM_PROPERTY	Create/Edit Materials
updates scalar every time a particle position is updated	DEFINE_DPM_SCALAR_UPDATE	Discrete Phase Model
particle source terms	DEFINE_DPM_SOURCE	Discrete Phase Model
particle collisions algorithm	DEFINE_DPM_SPRAY_COLLIDE	Discrete Phase Model
changes the criteria for switching between laws	DEFINE_DPM_SWITCH	Custom Laws
time step control for DPM simulation	DEFINE_DPM_TIMESTEP	Discrete Phase Model
equilibrium vapor pressure of vaporizing components of multicomponent particles	DEFINE_DPM_VP_EQUILIB	Create/Edit Materials