@article{181241, keywords = {Kinetics, Temperature, oxidation, mixtures, nitrogen oxides, kinetic theory, Electric discharges, Gas chromatography, Pyrolysis, Reaction kinetics}, author = {Hongtao Zhong and Xingqian Mao and Aric C. Rousso and Charles L. Patrick and Chao Yan and Wenbin Xu and Qi Chen and Gerard Wysocki and Yiguang Ju}, title = {Kinetic study of plasma-assisted n-dodecane/O 2 /N 2 pyrolysis and oxidation in a nanosecond-pulsed discharge}, abstract = { The present study investigates the kinetics of low-temperature pyrolysis and oxidation of n-dodecane/O 2 /N 2 mixtures in a repetitively-pulsed nanosecond discharge experimentally and numerically. Time-resolved TDLAS measurements, steady-state gas chromatography (GC) sampling, and mid-IR dual-modulation Faraday rotation spectroscopy (DM-FRS) measurements are conducted to quantify temperature as well as species formation and evolution. A plasma-assisted n-dodecane pyrolysis and oxidation kinetic model incorporating the reactions involving electronically excited species and NO x chemistry is developed and validated. The results show that a nanosecond discharge can dramatically accelerate n-dodecane pyrolysis and oxidation at low temperatures. The numerical model has a good agreement with experimental data for the major intermediate species. From the pathway analysis, electronically excited N* 2 plays an important role in n-dodecane pyrolysis and oxidation. The results also show that with addition of n-dodecane, NO concentration is reduced considerably, which suggests that there is a strong NO kinetic effect on plasma-assisted low-temperature combustion via NO-RO 2 and NO 2 -fuel radical reaction pathways. This work advances the understandings of the kinetics of plasma-assisted low-temperature fuel oxidation in N 2 /O 2 mixtures. 2020 The Combustion Institute. }, year = {2020}, journal = {Proceedings of the Combustion Institute}, volume = {10.1016/j.proci.2020.06.016}, publisher = {Elsevier Ltd}, isbn = {15407489}, url = {https://doi.org/10.1016/j.proci.2020.06.016}, language = {eng}, }