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    Kinetics and dynamics of nanosecond streamer discharge in atmospheric-pressure gas bubble suspended in distilled water under saturated vapor pressure conditions

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    Type
    Article
    Authors
    Sharma, Ashish
    Levko, Dmitry
    Raja, Laxminarayan L
    Cha, Min Suk cc
    KAUST Department
    Clean Combustion Research Center
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2016-09-08
    Online Publication Date
    2016-09-08
    Print Publication Date
    2016-10-05
    Permanent link to this record
    http://hdl.handle.net/10754/621761
    
    Metadata
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    Abstract
    We perform computational studies of nanosecond streamer discharges generated in helium bubbles immersed in distilled water under atmospheric pressure conditions. The model takes into account the presence of water vapor in the gas bubble for an accurate description of the discharge kinetics. We find that the dynamic characteristics of the streamer discharge are different at low and high positive trigger voltages with the axial streamer evolution dominant for low voltages and a surface hugging mode favored for high voltages. We also find a substantial difference in initiation, transition and evolution stages of discharge for positive and negative trigger voltages with the volumetric distribution of species in the streamer channel much more uniform for negative trigger voltages on account of the presence of multiple streamers. We observe that the presence of water vapor does not affect the breakdown voltage even for oversaturated conditions but significantly influences the composition of dominant species in the trail of the streamer as well as the flux of the dominant species on the bubble surface. © 2016 IOP Publishing Ltd.
    Citation
    Sharma A, Levko D, Raja LL, Cha MS (2016) Kinetics and dynamics of nanosecond streamer discharge in atmospheric-pressure gas bubble suspended in distilled water under saturated vapor pressure conditions. Journal of Physics D: Applied Physics 49: 395205. Available: http://dx.doi.org/10.1088/0022-3727/49/39/395205.
    Sponsors
    King Abdullah University of Science and Technology
    Publisher
    IOP Publishing
    Journal
    Journal of Physics D: Applied Physics
    DOI
    10.1088/0022-3727/49/39/395205
    ae974a485f413a2113503eed53cd6c53
    10.1088/0022-3727/49/39/395205
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

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