H2 and H2/CO Experimental Data
NOTE: This dataset has to be interpreted in conjunction with the article below:
G. Mittal, C. J. Sung, and R. A. Yetter, “Autoignition of H2/CO at Elevated Pressures in a Rapid Compression Machine,” International Journal of Chemical Kinetics 38, 516-529 (2006).
Hydrogen Autoignition
Molar composition: H2/O2/N2/Ar = 12.5/6.25/18.125/63.125
P0 = Initial pressure
T0 = Initial temperature
PC = Pressure at TDC
TC = Temperature at TDC
Hydrogen/Carbon Monoxide Autoignition
Molar composition: (H2+CO)/O2/N2/Ar = 12.5/6.25/18.125/63.125
RCO is defined as the mole percentage of CO in the combined H2/CO fuel mixture, and is expressed as RCO=FCO/(FH2+FCO), where FCO and FH2 are respectively the mole fractions of CO and H2 in the fuel mixture.
Simulation Procedure
- Use the following program as the driver program for SENKIN: driver.f
- Specify initial pressure (P0), temperature (T0), composition in the SENKIN input file with VOLT keyword for calculations.
- Copy the file hl.txt, which contains parameters for heat loss, for the specific case in the program directory.
- Run the program
Note: Heat loss parameters are in the form of a polynomial. At long time after compression the polynomial may blow up to erroneous values. SENKIN calculations should be performed to a reasonable time which is sufficient for ignition to occur.
Heat loss Parameters
Hydrogen Autoignition
Molar composition: H2/O2/N2/Ar = 12.5/6.25/18.125/63.125
P0 = Initial pressure
T0 = Initial temperature
PC = Pressure at TDC
TC = Temperature at TDC
Pressure at TDC, PC: 50 bar
|
P0 (torr)
|
T0 (K)
|
TC (K)
|
Ignition delay(ms)
|
hl.txt
|
|
958
|
297.4
|
1044.0
|
1
|
|
|
1021.7
|
298.3
|
1025.5
|
1.7
|
|
|
1056.5
|
297
|
1007.0
|
3
|
|
|
1140
|
296.8
|
983.0
|
6.5
|
|
|
1217
|
296.9
|
963.0
|
12.9
|
Pressure at TDC, PC: 30 bar
|
P0 (torr)
|
T0 (K)
|
TC (K)
|
Ignition delay(ms)
|
hl.txt
|
|
572.3
|
297.9
|
1046.5
|
1.32
|
|
|
604
|
297.5
|
1029.0
|
2
|
|
|
640
|
298.1
|
1010.5
|
4.3
|
|
|
666
|
297.2
|
994.0
|
7.8
|
|
|
705.8
|
298.1
|
977.0
|
13.9
|
|
|
758
|
296.9
|
952.0
|
41.7
|
Pressure at TDC, PC: 15 bar
|
P0 (torr)
|
T0 (K)
|
TC (K)
|
Ignition delay(ms)
|
hl.txt
|
|
268.5
|
297
|
1066.0
|
0.9
|
|
|
283.5
|
296.6
|
1045.0
|
2.12
|
|
|
300.7
|
297.5
|
1028.5
|
3.6
|
|
|
314.7
|
297.8
|
1017.0
|
6.55
|
|
|
335.5
|
298.3
|
996.0
|
15.2
|
|
|
343.6
|
297.3
|
983.0
|
27.1
|
Hydrogen/Carbon Monoxide Autoignition
Molar composition: (H2+CO)/O2/N2/Ar = 12.5/6.25/18.125/63.125
PC= 50 bar, T0 = 297.4 K, TC= 1044 K
|
RCO
|
P0 (torr)
|
Ignition delay (ms)
|
hl.txt
|
|
0
|
958
|
1
|
|
|
.25
|
955.5
|
1.35
|
|
|
.50
|
953
|
1.95
|
|
|
.65
|
951.5
|
2.55
|
|
|
.80
|
950
|
3.75
|
PC = 30 bar, T0= 298.1 K, TC = 1010.5 K
|
RCO
|
P0 (torr)
|
Ignition delay (ms)
|
hl.txt
|
|
0
|
640
|
4.3
|
|
|
.25
|
637.8
|
6.9
|
|
|
.50
|
636
|
9.6
|
|
|
.65
|
634.5
|
13.1
|
|
|
.80
|
633
|
18.4
|
PC = 15 bar, T0 = 297.5 K, TC = 1028.5 K
|
RCO
|
P0 (torr)
|
Ignition delay (ms)
|
hl.txt
|
|
0
|
300.7
|
3.6
|
|
|
.25
|
297.7
|
5.05
|
|
|
.50
|
296.3
|
6.7
|
|
|
.65
|
294.7
|
7.75
|
|
|
.80
|
293.7
|
9.45
|