Dimethyl ether Autoignition Experimental Data
NOTE: This dataset has to be interpreted in conjunction with the article below:
G. Mittal, M. Chaos, C. J. Sung, and F. L. Dryer, “Dimethyl Ether Autoignition in a Rapid Compression Machine: Experiments and Chemical Kinetic Modeling,” Fuel Processing Technology 89 (12), 1244-1254 (2008). doi:10.1016/j.fuproc.2008.05.021
Molar Compositions of Gas Mixtures Investigated
|
DME |
O2 |
N2 |
φ |
|
1 |
7 |
27 |
0.428 |
|
1 |
4 |
30 |
0.750 |
|
1 |
2 |
32 |
1.500 |
Table of Experimentally Measured Ignition Delay Data
- P0 = Initial pressure, torr
- T0 = Initial temperature, K
- PC = Pressure at TDC, bar
- TC = Temperature at TDC, K
- t 1 = First stage ignition delay, ms
- t 2 = Total ignition delay, ms
Ignition delay data (xls, 45 kB)
Experimental Pressure Traces
- Experimental pressure traces for f = 0.428, PC ~10, 15 bar
- Experimental pressure traces for f = .75, PC ~10, 15, 20 bar
- Experimental pressure traces for f = 1.5, PC ~10, 15 bar
Heat Loss Parameters
- For a given mixture with known P0 and PC from the ‘ignition delay data’ table above, first identify the case number from the file below
Case numbers file
- With the known case numbers, identify the heat loss parameters from the file given below, and copy the parameters to a file with the title hl.txt in the same directory which has SENKIN
Heat loss parameters for all cases
- 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 VTIM keyword for calculations.
- 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.