Decane oxidation in a shock tube

Abstract

The ignition delay of n-decane and oxygen diluted in argon was investigated for a series of mixtures ranging from 0.49 to 1.5% decane and 4.16 to 23.25% O 2 diluted in argon. The temperature range was 1239-1616 K and the pressure range was 1.82-10.0 atm. All experiments were performed in a heated shock-tube. An overall ignition delay equation was deduced for 144 experiments: τ = 10 −12 exp(+34240/RT ) [

Ignition time measurements for methylcylcohexane‐ and ethylcyclohexane‐air mixtures at elevated pressures

“…The high-temperature activation energy is in the range of 31-33 kcal/mol for MCH and 28-30 kcal/mol for ECH, very similar to that observed for other hydrocarbons in the high-temperature regime under the conditions studied here [29,[33][34][35].…”

Experimental and Modeling Studies of the Characteristics of Liquid Biofuels for Enhanced Combustion

“…We therefore show some comparisons with their correlations, with the caveat that agreements or discrepancies with their correlations could be clouded by uncertainties in the correlations themselves. Figure 49 compares the calculated ignition-delay times with the correlation of Olchanski et al [24] for an n-decane/O2/Ar mixture with an equivalence ratio of 0.5 and with 85 mol % Ar. Ignition times are shown for 2 atm and 10 atm, over a temperature range of 1200-1600 K. The model shows faster ignition than the correlation, but shows the correct trends as a function of temperature and pressure.…”

“…The predictions agree well with the experimental data over the (high) temperature range shown. Olchanski et al [24] and Horning et al [23] performed several experiments with n-decane/O2/Ar mixtures, but instead of reporting the data, they reported correlations of the data for a range of temperatures, concentrations and pressures. While we would prefer to compare to the actual data instead of correlations, the data were not reported.…”

Shock tube study of n-decane ignition at low pressures

“…Pfahl et al [4] measured ignition delay times of n-decane/air mixtures at pressures of 1.3 MPa and 5.1 MPa, and their results were used as kinetic targets for most kinetic mechanisms of n-decane oxidation. Ignition delay times of n-decane/O 2 /Ar mixtures were measured by Olchanski and Burcat [5] at pressures of 0.18-1.0 MPa. They proposed a kinetic model that fits their experiments quite well.…”

“…Experiments on the ignition of n-decane in the heated shock tube have been carried out previously [2,[4][5][6][7][8][9], but most of them were conducted under high pressures. Pfahl et al [4] measured ignition delay times of n-decane/air mixtures at pressures of 1.3 MPa and 5.1 MPa, and their results were used as kinetic targets for most kinetic mechanisms of n-decane oxidation.…”