Mass Sources and Sinks
To compute the mass flux of a species,
n
i
(SI unit: kg/(m
2
·s)), the molar flux is multiplied by the molar mass,
M
i
(SI unit: kg/mol), resulting in
for a mass flux boundary, and
for a porous source term.
In the Transport of Concentrated Species interface, where a nonconservative formulation of the flux equations are used, the source term is corrected for the mass change in the species transporting phase according to
(4-54)
Equation 4-54
is for a domain source only, the flux expression over a boundary is not changed for a nonconservative formulation.
