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    Inevitable chemical effect of balance gas in low temperature plasma assisted combustion

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    authors version_2021_CNF_4.700_Inevitable chemical effect of balance gas_Snoeckx.pdf
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    Type
    Article
    Authors
    Snoeckx, Ramses cc
    Cha, Min Suk cc
    KAUST Department
    Clean Combustion Research Center
    Physical Science and Engineering (PSE) Division
    Mechanical Engineering Program
    KAUST Grant Number
    BAS/1/1384–01–01
    Date
    2020-11-07
    Online Publication Date
    2020-11-07
    Print Publication Date
    2021-03
    Submitted Date
    2020-06-14
    Permanent link to this record
    http://hdl.handle.net/10754/665968
    
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    Abstract
    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.2020.10.028
    Sponsors
    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 BV
    Journal
    Combustion and Flame
    DOI
    10.1016/j.combustflame.2020.10.028
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S001021802030448X
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.combustflame.2020.10.028
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

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