When 
exists in phase 
, the
corresponding field variable is denoted 
. If it obeys a transport equation, it is given by:
 | (5–206) |
Note:
is
the conserved quantity per unit mass of phase 
.
is
the conserved quantity per unit volume of phase 
, where 
is the Kinematic Diffusivity for the scalar in phase 
. This
may be set for each Additional Variable and each phase separately. 
is the external volumetric source term in phase 
, with
units of conserved quantity per unit volume per unit time.
represents the total source to 
due to interphase transfer across interfaces with
other phases.Although the turbulent Schmidt number,
, is shown to apply to phase 
only,
it currently cannot be specified on a phase-specific basis in CFX.
As in single phase, Diffusive Transport and Poisson equations are also available for multiphase Additional Variables). For details, see Additional Variables. Diffusive transport equations exclude the advection term, turbulent diffusion term, and contributions due to interphase mass transfer from Equation 5–206. Poisson equations exclude these terms as well as the transient term.