C.2 Mixture Model

Tables  C.2.1- C.2.3 list the variables that can be customized using UDFs for the Mixture multiphase model, the DEFINE macros that are used to define the UDFs, and the phase that the UDF needs to be hooked to for the given variable.

Table C.2.1: DEFINE Macro Usage for the Mixture Model

Variable	Macro	Phase Specified On
Boundary Conditions Inlet/Outlet
volume fraction	DEFINE_PROFILE	secondary phase(s)
mass flux	DEFINE_PROFILE	primary and secondary phase(s)
velocity magnitude	DEFINE_PROFILE	primary and secondary phase(s)
pressure	DEFINE_PROFILE	mixture
temperature	DEFINE_PROFILE	mixture
species mass fractions	DEFINE_PROFILE	phase-dependent
user-defined scalar boundary value	DEFINE_PROFILE	mixture
discrete phase boundary condition	DEFINE_PROFILE	mixture

Table C.2.2: DEFINE Macro Usage for the Mixture Model

Variable	Macro	Phase Specified On
Fluid
mass source	DEFINE_SOURCE	primary and secondary phase(s)
momentum source	DEFINE_SOURCE	mixture
energy source	DEFINE_SOURCE	mixture
turbulence kinetic energy source	DEFINE_SOURCE	mixture
turbulence dissipation rate source	DEFINE_SOURCE	mixture
granular temperature source	DEFINE_SOURCE	secondary phase(s)
user scalar source	DEFINE_SOURCE	mixture
species source	DEFINE_SOURCE	phase-dependent
species mass fractions	DEFINE_PROFILE	phase-dependent
velocity	DEFINE_PROFILE	mixture
temperature	DEFINE_PROFILE	mixture
turbulence kinetic energy	DEFINE_PROFILE	mixture
turbulence dissipation rate	DEFINE_PROFILE	mixture
porosity	DEFINE_PROFILE	mixture
granular temperature	DEFINE_PROFILE	secondary phase(s)
viscous resistance	DEFINE_PROFILE	primary and secondary phase(s)
inertial resistance	DEFINE_PROFILE	primary and secondary phase(s)
Wall
roughness height	DEFINE_PROFILE	mixture
roughness constant	DEFINE_PROFILE	mixture
internal emissivity	DEFINE_PROFILE	mixture
shear stress components	DEFINE_PROFILE	mixture
moving velocity components	DEFINE_PROFILE	mixture
heat flux	DEFINE_PROFILE	mixture
heat generation rate	DEFINE_PROFILE	mixture
heat transfer coefficient	DEFINE_PROFILE	mixture
external emissivity	DEFINE_PROFILE	mixture
external radiation temperature	DEFINE_PROFILE	mixture
free stream temperature	DEFINE_PROFILE	mixture
granular flux	DEFINE_PROFILE	secondary phase(s)
granular temperature	DEFINE_PROFILE	secondary phase(s)
user scalar boundary value	DEFINE_PROFILE	mixture
discrete phase boundary value	DEFINE_DPM_BC	mixture
species boundary condition	DEFINE_PROFILE	phase-dependent

Table C.2.3: DEFINE Macro Usage for the Mixture Model

Variable	Macro	Phase Specified On
Material Properties
cavitation surface tension coefficient	DEFINE_PROPERTY	phase interaction
cavitation vaporization pressure	DEFINE_PROPERTY	phase interaction
particle or droplet diameter	DEFINE_PROPERTY	secondary phase(s)
granular diameter	DEFINE_PROPERTY	secondary phase(s)
granular solids pressure	DEFINE_PROPERTY	secondary phase(s)
granular radial distribution	DEFINE_PROPERTY	secondary phase(s)
granular elasticity modulus	DEFINE_PROPERTY	secondary phase(s)
granular viscosity	DEFINE_PROPERTY	secondary phase(s)
granular temperature	DEFINE_PROPERTY	secondary phase(s)
Other
slip velocity	DEFINE_VECTOR_ EXCHANGE_PROPERTY	phase interaction
drag coefficient	DEFINE_EXCHANGE	phase interaction
mass transfer coefficient	DEFINE_MASS_TRANSFER	phase interaction
heterogeneous reaction rate	DEFINE_HET_RXN_RATE	phase interaction