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_G_MODEL¶
Data Type: CHARACTER
Gas viscosity model (default is Sutherland’s law).
Name |
Default? |
Description |
|---|---|---|
|
Constant viscosity |
|
|
◉ |
Sutherland’s law |
|
Herschel-Bulkley (non-Newtonian) model |
|
|
User-defined function |
12.1.7.3. MU_G0¶
Data Type: DOUBLE PRECISION
Specified constant gas viscosity [Pa.s in SI].
12.1.7.4. SL_MUREF¶
Data Type: DOUBLE PRECISION
Reference gas viscosity [Pa.s in SI] in the Sutherland’s law.
12.1.7.5. SL_TREF¶
Data Type: DOUBLE PRECISION
Reference temperature [K] in the Sutherland’s law.
12.1.7.6. SL_S¶
Data Type: DOUBLE PRECISION
Sutherland constant [K] in the Sutherland’s law.
12.1.7.7. HB_TAU0¶
Data Type: DOUBLE PRECISION
Bingham yield stress [Pa] in Herschel-Bulkley viscosity law.
12.1.7.8. HB_K0¶
Data Type: DOUBLE PRECISION
Consistency factor [Pa.s^n] in Herschel-Bulkley viscosity law.
12.1.7.9. HB_N¶
Data Type: DOUBLE PRECISION
Power law index (dimensionless) in Herschel-Bulkley viscosity law.
0 < HB_n < 1 : Shear thinning fluid
HB_n = 1 : Bingham fluid
HB_n > 1 : Shear thickening fluid
12.1.7.10. HB_GAMA_C¶
Data Type: DOUBLE PRECISION
Strain rate cutoff [1/s] in Herschel-Bulkley viscosity law.
12.1.7.11. K_G0¶
Data Type: DOUBLE PRECISION
Specified constant gas conductivity [J/(s.m.K) in SI].
12.1.7.12. C_PG0¶
Data Type: DOUBLE PRECISION
Specified constant gas specific heat [J/(kg.K) in SI].
12.1.7.13. DIF_G0¶
Data Type: DOUBLE PRECISION
Specified constant gas diffusivity [m^2/s in SI].
12.1.7.14. 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.
12.1.7.15. MW_G(SPECIES)¶
Data Type: DOUBLE PRECISION
\(1 \le Species \le 100\)
Molecular weight of gas species [kg/kmol in SI].
12.1.7.16. NMAX_G¶
Data Type: INTEGER
Number of species comprising the gas phase.
12.1.7.17. SPECIES_G(SPECIES)¶
Data Type: CHARACTER
\(1 \le Species \le 100\)
Name of gas phase species as it appears in the materials database.
12.1.7.18. 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.