Thursday 10
L. Emerging and Topical Applications of Gas Discharges
Chair: S. Leonov - Each talk is 10'+2' duration
› 17:00 - 17:10 (10min)
› Cabannes
Ignition in Ethanol-Containing Mixtures after High-Voltage Nanosecond Discharge
Nickolay Aleksandrov  1, *@  , Ilya Kosarev  1@  , Svetlana Kindysheva  1@  , Andrey Starikovskii  2@  
1 : Moscow Institute of Physics and Technology  (MIPT)  -  Website
141700, 9, Institutskii per., Dolgoprudny, Moscow Region, Russia -  Russia
2 : Princeton University  -  Website
Princeton University Princeton, NJ 08544 USA -  United States
* : Corresponding author

We study the kinetics of ignition in lean and stoichiometric C2H5OH:O2:Ar mixtures after a high-voltage nanosecond discharge. Ignition delay time above the self-ignition threshold is measured in a shock tube with a discharge cell. Creation of the discharge plasma is shown to lead to a significant decrease in ignition delay. Discharge processes followed by chain chemical reactions with energy release are simulated during ignition in the C2H5OH:O2:Ar mixtures. Good agreement is obtained between calculated and measured ignition delay times. It is shown that the effect of the discharge plasma on ignition of the ethanol-containing mixtures is associated with active species production in the discharge phase. A method is suggested to compare the effect of nonequilibrium pulse discharge plasma on ignition in different fuel-air and fuel-oxygen mixtures above self-ignition temperatures. It is shown that, in all mixtures under consideration, this effect is more profound at lower gas temperatures and for fuels with low reactivity.


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