Mass Fraction
The
Mass Fraction
node adds boundary conditions for the species mass fractions. For example, the following condition specifies the mass fraction of species
i:
ω
i
=
ω
i,
0
.
Set the mass fractions of all species except the one computed from the mass constraint. This ensures that the sum of the mass fractions is equal to one (see
Species
). This node is available for exterior and interior boundaries.
Mass Fraction
Specify the mass fraction for each species individually. Select the check box for the species to specify the mass fraction, and enter a value or expression in the corresponding field. To use another boundary condition for a specific species, click to clear the check box for the mass fraction of that species.
Constraint Settings
To display this section, click the
Show
button (
) and select
Advanced Physics Options
.
) and select Advanced Physics Options.