GasMix implements the ideal gas equation of state:
with a temperature dependent specific heat in the form:
Gas data come from the JANAF tables, as documented in:
and more recently in:
Transport properties are calculated according to the following methods:
- Viscosity: Chapman &endash; Enskog
- Thermal conductivity: Eucken
Details of the theory and fluid data for these methods can be found in:
Reid, R.C., Prausnitz, J.M. and Sherwood, T.K. The Properties of Gases and Liquids, 3rd ed., McGraw-Hill, 1977.
The GasMix components can be used as pure fluids or in a mixture. GasMix provides thermodynamic and transport properties for the fluids in Table 1. The listed FluidProp names (either short or long) must be used to specify the fluid name in the SetFluid method. For GasMix the short FluidProp name equals the chemical formula of the fluid. For a given fluid, the FluidProp name is the same in all thermodynamic libraries in which the fluid is available.
FluidProp name (short) |
FluidProp name (long) |
MW [g/mol] |
Tmin [°C] |
Tmax [°C] |
Tmin [K] |
Tmax [K] |
C2H2 |
acetylene |
26.0382 |
26.85 |
4726.85 |
300 |
5000 |
NH3 |
ammonia |
17.0306 |
26.85 |
4726.85 |
300 |
5000 |
Ar |
argon |
39.9480 |
26.85 |
4726.85 |
300 |
5000 |
Br2 |
bromine |
159.8180 |
26.85 |
4726.85 |
300 |
5000 |
C4H10 |
butane |
58.1230 |
26.85 |
2226.85 |
300 |
2500 |
CO2 |
carbon dioxide |
44.0098 |
26.85 |
4726.85 |
300 |
5000 |
CS2 |
carbon disulfide |
76.1391 |
26.85 |
4726.85 |
300 |
5000 |
CO |
carbon monoxide |
28.0104 |
26.85 |
4726.85 |
300 |
5000 |
CCl4 |
carbon tetrachloride |
153.8231 |
26.85 |
4726.85 |
300 |
5000 |
COS |
carbonyl sulfide |
60.0745 |
26.85 |
4726.85 |
300 |
5000 |
Cl2 |
chloride |
70.9060 |
26.85 |
4726.85 |
300 |
5000 |
CH3OCH3 |
dimethylether |
46.0690 |
-73.15 |
5726.85 |
200 |
6000 |
C2H6 |
ethane |
30.0694 |
26.85 |
2226.85 |
300 |
2500 |
C2H5OH |
ethanol |
46.0690 |
-73.15 |
5726.85 |
200 |
6000 |
C2H4 |
ethylene |
28.0542 |
26.85 |
4726.85 |
300 |
5000 |
F2 |
fluorine |
37.9968 |
26.85 |
4726.85 |
300 |
5000 |
He |
helium |
4.0026 |
26.85 |
4726.85 |
300 |
5000 |
C7H16 |
heptane |
100.2040 |
-73.15 |
5726.85 |
200 |
6000 |
C6H14 |
hexane |
86.1754 |
-73.15 |
5726.85 |
200 |
6000 |
HF |
hydro fluoride |
20.0064 |
26.85 |
4726.85 |
300 |
5000 |
HCl |
hydrochloric acid |
36.4610 |
26.85 |
4726.85 |
300 |
5000 |
HCN |
hydrogen cyanide |
27.0258 |
26.85 |
4726.85 |
300 |
5000 |
H2 |
hydrogen |
2.0158 |
26.85 |
4726.85 |
300 |
5000 |
H |
hydrogen atom |
1.0079 |
26.85 |
4726.85 |
300 |
5000 |
H2O2 |
hydrogen peroxide |
34.0147 |
26.85 |
4726.85 |
300 |
5000 |
H2S |
hydrogen sulfide |
34.0799 |
26.85 |
4726.85 |
300 |
5000 |
OH |
hydroxyl |
17.0073 |
26.85 |
4726.85 |
300 |
5000 |
CH4 |
methane |
16.0426 |
26.85 |
4726.85 |
300 |
5000 |
CH4O |
methanol |
32.0422 |
-73.15 |
5726.85 |
200 |
6000 |
Ne |
neon |
20.1830 |
26.85 |
4726.85 |
300 |
5000 |
NO |
nitric oxide |
30.0061 |
26.85 |
4726.85 |
300 |
5000 |
N2 |
nitrogen |
28.0134 |
26.85 |
4726.85 |
300 |
5000 |
NO2 |
nitrogen dioxide |
46.0055 |
26.85 |
4726.85 |
300 |
5000 |
NOCl |
nitrosyl chloride |
65.4591 |
26.85 |
4726.85 |
300 |
5000 |
N2O |
nitrous oxide |
44.0128 |
26.85 |
4726.85 |
300 |
5000 |
C8H18 |
octane |
114.2309 |
-73.15 |
5726.85 |
200 |
6000 |
O2 |
oxygen |
31.9988 |
26.85 |
4726.85 |
300 |
5000 |
O |
oxygen atom |
15.9994 |
26.85 |
4726.85 |
300 |
5000 |
C5H12 |
pentane |
72.1498 |
26.85 |
2226.85 |
300 |
2500 |
C3H8 |
propane |
44.0962 |
-73.15 |
5726.85 |
200 |
6000 |
SiH4 |
silane |
32.1179 |
26.85 |
4726.85 |
300 |
5000 |
Si |
silicon |
28.0855 |
26.85 |
4726.85 |
300 |
5000 |
SiO2 |
silicon oxide |
60.0848 |
26.85 |
4726.85 |
300 |
5000 |
SiF4 |
silicon tetrafluoride |
104.0795 |
26.85 |
4726.85 |
300 |
5000 |
S |
sulfur |
32.0640 |
26.85 |
4726.85 |
300 |
5000 |
SO2 |
sulfur dioxide |
64.0628 |
26.85 |
4726.85 |
300 |
5000 |
SF6 |
sulfur hexafluoride |
146.0543 |
26.85 |
4726.85 |
300 |
5000 |
SO3 |
sulfur trioxide |
80.0621 |
26.85 |
4726.85 |
300 |
5000 |
BCl3 |
trichloro borane |
117.1699 |
26.85 |
4726.85 |
300 |
5000 |
BF3 |
trifluoro borane |
67.8062 |
26.85 |
4726.85 |
300 |
5000 |
H2O |
water |
18.0152 |
26.85 |
4726.85 |
300 |
5000 |
H2O(IF) |
water (IAPWS-IF97) |
18.0152 |
0.00 |
2000.00 |
273 |
2273 |