Shock-Tube Measurements of Toluene Ignition Times and Radical Chemiluminescent Spectra at Low Pressures

2012 ◽  
Vol 26 (2) ◽  
pp. 1107-1113 ◽  
Author(s):  
Changhua Zhang ◽  
Ping Li ◽  
Junjiang Guo ◽  
Xiangyuan Li
Keyword(s):  
Shock Tube ◽  
Low Pressures ◽  
Ignition Times

Shock tube measurements of branched alkane ignition times and OH concentration time histories

2003 ◽  
Vol 36 (2) ◽  
pp. 67-78 ◽  
Author(s):  
M. A. Oehlschlaeger ◽  
D. F. Davidson ◽  
J. T. Herbon ◽  
R. K. Hanson
Keyword(s):  
Shock Tube ◽  
Concentration Time ◽  
Time Histories ◽  
Ignition Times

Detailed and Reduced-Chemistry Descriptions for Ignition and Detonation of Propane

2003 ◽  
Author(s):  
M. V. Petrova ◽  
B. Varatharajan ◽  
F. A. Williams
Keyword(s):  
Steady State ◽  
Shock Tube ◽  
Chemical Species ◽  
Detailed Mechanism ◽  
Reduced Mechanism ◽  
Reduced Chemistry ◽  
Good Agreement ◽  
Ignition Times

The chemistry of autoignition of propane is studied with the objective of developing reduced chemistry descriptions. A detailed mechanism of 165 reaction steps among 38 chemical species is identified. This mechanism is reduced to a short mechanism of 34 steps, by deleting steps that are unnecessary. In the short mechanism, steady-state species are identified for deriving a systematically reduced mechanism. Good agreement with measured shock-tube ignition times is found.

Shock tube measurements of iso-octane ignition times and OH concentration time histories

2002 ◽  
Vol 29 (1) ◽  
pp. 1295-1301 ◽  
Author(s):  
D.F. Davidson ◽  
M.A. Oehlschlaeger ◽  
J.T. Herbon ◽  
R.K. Hanson
Keyword(s):  
Shock Tube ◽  
Concentration Time ◽  
Time Histories ◽  
Ignition Times

scholarly journals The development of a detailed chemical kinetic mechanism for diisobutylene and comparison to shock tube ignition times

2007 ◽  
Vol 31 (1) ◽  
pp. 377-384 ◽  
Author(s):  
Wayne K. Metcalfe ◽  
William J. Pitz ◽  
Henry J. Curran ◽  
John M. Simmie ◽  
Charles K. Westbrook
Keyword(s):  
Shock Tube ◽  
Kinetic Mechanism ◽  
Chemical Kinetic ◽  
Chemical Kinetic Mechanism ◽  
Detailed Chemical ◽  
Ignition Times

Shock Tube Measurements Of Iso-Octane Ignition Times And OH Concentration Time Histories

2002 ◽  
Author(s):  
D. F. Davidson ◽  
M. A. Oehlschiaeger ◽  
J. T. Herbon ◽  
R. K. Hanson
Keyword(s):  
Shock Tube ◽  
Concentration Time ◽  
Time Histories ◽  
Ignition Times

scholarly journals An Experimental Kinetics Study of Isopropanol Pyrolysis and Oxidation behind Reflected Shock Waves

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6808
Author(s):  
Sean P. Cooper ◽  
Claire M. Grégoire ◽  
Darryl J. Mohr ◽  
Olivier Mathieu ◽  
Sulaiman A. Alturaifi ◽  
...  
Keyword(s):  
Shock Tube ◽  
Chemical Kinetic ◽  
Average Pressure ◽  
Laser Absorption ◽  
Reflected Shock ◽  
The Impact ◽  
Experimental Kinetics ◽  
Low Pressures ◽  
Proper Interpretation ◽  
Heated Shock Tube

Isopropanol has potential as a future bio-derived fuel and is a promising substitute for ethanol in gasoline blends. Even so, little has been done in terms of high-temperature chemical kinetic speciation studies of this molecule. To this end, experiments were conducted in a shock tube using simultaneous CO and H2O laser absorption measurements. Water and CO formation during isopropanol pyrolysis was also examined at temperatures between 1127 and 2162 K at an average pressure of 1.42 atm. Species profiles were collected at temperatures between 1332 and 1728 K and at an average pressure of 1.26 atm for equivalence ratios of 0.5, 1.0, and 2.0 in highly diluted mixtures of 20% helium and 79.5% argon. Species profiles were also compared to four modern C3 alcohol mechanisms, including the impact of recent rate constant measurements. The Li et al. (2019) and Saggese et al. (2021) models both best predict CO and water production under pyrolysis conditions, while the AramcoMech 3.0 and Capriolo and Konnov models better predict the oxidation experimental profiles. Additionally, previous studies have collected ignition delay time (τign) data for isopropanol but are limited to low pressures in highly dilute mixtures. Therefore, real fuel–air experiments were conducted in a heated shock tube with isopropanol for stoichiometric and lean conditions at 10 and 25 atm between 942 and 1428 K. Comparisons to previous experimental results highlight the need for real fuel–air experiments and proper interpretation of shock-tube data. The AramcoMech 3.0 model over predicts τign values, while the Li et al. model severely under predicts τign. The models by Capriolo and Konnov and Saggese et al. show good agreement with experimental τign values. A sensitivity analysis using these two models highlights the underlying chemistry for isopropanol combustion at 25 atm. Additionally, modifying the Li et al. model with a recently measured reaction rate shows improvement in the model’s ability to predict CO and water profiles during dilute oxidation. Finally, a regression analysis was performed to quantify τign results from this study.

Shock tube study of n-decane ignition at low pressures

2011 ◽  
Vol 28 (1) ◽  
pp. 79-82 ◽  
Author(s):  
Xiao-Fei Nie ◽  
Ping Li ◽  
Chang-Hua Zhang ◽  
Wei Xie ◽  
Cong-Shan Li ◽  
...  
Keyword(s):  
Shock Tube ◽  
Low Pressures ◽  
Tube Study
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