GasMix

GasMix implements the ideal gas equation of state:

 

images/FluidProp00000022.gif

 

with a temperature dependent specific heat in the form:

 

images/FluidProp00000023.gif

 

Gas data come from the JANAF tables, as documented in:

  1. Gordon, S., McBride, B.J. Computer Program for Calculation of complex Chemical Equilibrium Compositions. Lewis Research Center, NASA SP-273, 1971.

and more recently in:

  1. Chase, J.M.W., J. Phys. Chem. Ref. Data, Monograph 9, 1998.

 

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:

  1. 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.

 
Table 1
 

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