Inevitable chemical effect of balance gas in low temperature plasma assisted combustion
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ArticleAuthors
Snoeckx, Ramses
Cha, Min Suk

KAUST Department
Clean Combustion Research CenterPhysical Science and Engineering (PSE) Division
Mechanical Engineering Program
KAUST Grant Number
BAS/1/1384–01–01Date
2020-11-07Online Publication Date
2020-11-07Print Publication Date
2021-03Submitted Date
2020-06-14Permanent link to this record
http://hdl.handle.net/10754/665968
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Electrical discharges (or plasmas) have attracted researchers’ attention to improve combustion characteristics. One of its key effects, which is not fully understood yet, is the in-situ production of chemically reactive species. Since most related low temperature kinetic studies to-date have been performed under highly diluted conditions (> 99%), here we present the inevitable and undesirable chemical effect of a balance gas (Ar, He, N2) on the plasma-chemical kinetics. We employ a zero dimensional plasma-chemical kinetics model in combination with a (detailed and reduced) H2/O2/Ar reaction mechanism. The presented results indicate that (dissociative) quenching of excited (metastable) states dominates the H2 and O2 dissociation processes under highly diluted conditions. Additionally, in the reduced field intensity (E/N) domain, the type and amount of the balance gas significantly alters the fraction of electron energy transferred to the other species in the mixture. Therefore, we propose essential steps for the design of future kinetic studies for plasma assisted combustion.Citation
Snoeckx, R., & Cha, M. S. (2021). Inevitable chemical effect of balance gas in low temperature plasma assisted combustion. Combustion and Flame, 225, 1–4. doi:10.1016/j.combustflame.2020.10.028Sponsors
The research reported in this publication was funded by King Abdullah University of Science and Technology (KAUST), under award number BAS/1/1384–01–01.Publisher
Elsevier BVJournal
Combustion and FlameAdditional Links
https://linkinghub.elsevier.com/retrieve/pii/S001021802030448Xae974a485f413a2113503eed53cd6c53
10.1016/j.combustflame.2020.10.028