Effects of dilution by aromatic hydrocarbons on staged ignition behavior of n-decane droplets

Detailed chemical kinetic models for the low-temperature combustion of hydrocarbons with application to gasoline and diesel fuel surrogates

“…The obtained results can be a further test of kinetic mechanisms, even if the complexity of the physical model is strongly increased. A review on this topic has been published by Aggarwal in 1998 [148] and more recent results have been obtained for n-decane at a gas temperature below 900 K [149][150].…”

“…The model of Milano has been successfully used to reproduce results of autoignition [149] and burning rates [150] of fuels droplets of n-decane in a heated gas at constant pressure [155]. The variation of the cool flame and the total ignition delay times with the ambient temperature was properly predicted.…”

“…A surrogate for diesel fuel has also been investigated: a mechanism for the oxidation of n-decane/1-methylnaphtalene mixtures [10] has been obtained by merging the low temperature mechanism for n-decane, as generated by EXGAS software, with that for 1-methylnaphtalene developed in the same study, with the addition of the two types of "cross term" reactions shown in figure 32. Qualitative validation was made against experimental autoignition delay times measured in a pressurized chamber at 3 bar in which a suspended droplet was suddenly brought to a temperature from 600 K to 750 K [149]. Models for n-heptane/MTBE and n-heptane/ETBE blends [107] were also generated by using EXGAS software and successfully tested against the experimental results obtained in a jet-stirred reactor [321]; "cross term" reactions were neglected.…”

Spontaneous Ignition of n-Alkane Droplets with Various Volatility

“…3. The values of 1,2,4-trimethylbenzene (TMB) estimated from the droplet ignition experiments 7) are also shown for comparison. TMB does not yield a cool flame, so only the values for the high-temperature reactions are shown.…”

“…Many experiments, theoretical analyses and numerical simulations have been done on the ignition of single fuel droplets in ambience with infinite volume as the simplest model of spray ignition. [1][2][3][4][5][6][7][8][9] From studies on ignition of premixed gas, it is well known that certain fuels (often n-alkanes) burn to yield a cool flame under certain conditions with a flame temperature typically lower than 1000 K and with almost no light emission. 10) Countless elementary reactions for the oxidation of such fuels can be divided into two groups: high-temperature reactions, and low-temperature reactions.…”