12.1.7. Gas Phase

12.1.7.1. RO_G0

Data Type: DOUBLE PRECISION

Specified constant gas density [kg/m^3 in SI]. An equation of state, the ideal gas law by default, is used to calculate the gas density if this parameter is undefined. The value may be set to zero to make the drag zero and to simulate granular flow in a vacuum. For this case, users may turn off solving for gas momentum equations to accelerate convergence.

12.1.7.2. MU_G0

Data Type: DOUBLE PRECISION

Specified constant gas viscosity [kg/(m.s) in SI].

12.1.7.3. K_G0

Data Type: DOUBLE PRECISION

Specified constant gas conductivity [J/(s.m.K) in SI].

12.1.7.4. C_PG0

Data Type: DOUBLE PRECISION

Specified constant gas specific heat [J/(kg.K) in SI].

12.1.7.5. DIF_G0

Data Type: DOUBLE PRECISION

Specified constant gas diffusivity [m^2/s in SI].

12.1.7.6. MW_AVG

Data Type: DOUBLE PRECISION

Average molecular weight of gas [kg/kmol in SI]. Used in calculating the gas density for non-reacting flows when the gas composition is not defined.

12.1.7.7. MW_G(SPECIES)

Data Type: DOUBLE PRECISION

• \(1 \le Species \le 100\)

Molecular weight of gas species [kg/kmol in SI].

12.1.7.8. NMAX_G

Data Type: INTEGER

Number of species comprising the gas phase.

12.1.7.9. SPECIES_G(SPECIES)

Data Type: CHARACTER

• \(1 \le Species \le 100\)

Name of gas phase species as it appears in the materials database.

12.1.7.10. SPECIES_ALIAS_G(SPECIES)

Data Type: CHARACTER

• \(1 \le Species \le 100\)

User defined name for gas phase species. Aliases are used in specifying chemical equations and must be unique.