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    Effect of applied DC electric fields in flame spread over polyethylene-coated electrical wire

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    Type
    Article
    Authors
    Jin, Young Kyu
    Kim, Minkuk
    Park, Jeong cc
    Chung, Suk Ho cc
    Yun, Jinhan
    Keel, Sangin
    KAUST Department
    Clean Combustion Research Center
    Combustion and Laser Diagnostics Laboratory
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2011-03-01
    Permanent link to this record
    http://hdl.handle.net/10754/565972
    
    Metadata
    Show full item record
    Abstract
    We experimentally investigated the effect of applied DC electric fields on the flame spread over polyethylene-coated electrical wire. The flame-spread rates over electrical wire with negative and positive DC electric fields from 0 to ±7 kV were measured and analyzed. We compared the results for DC electric fields with previous results for AC electric fields. We explored whether or not various flame shapes could be obtained with DC electric fields and the main reason for the flame-spread acceleration, particularly at the end of the electrical wire, for AC electric fields. We found that DC electric fields do not significantly affect the flame-spread rates. However, the flame shape is mildly altered by the ionic wind effect even for DC electric fields. The flame-spread rate is relevant to the flame shape and the slanted direction in spite of the mild impact. A possible explanation for the flame spread is given by a thermal-balance mechanism and fuel-vapor jet. © 2011 The Korean Society of Mechanical Engineers.
    Citation
    Jin, Y.-K., Kim, M.-K., Park, J., Chung, S.-H., Yun, J.-H., & Keel, S.-I. (2011). Effect of Applied DC Electric Fields in Flame Spread over Polyethylene-Coated Electrical Wire. Transactions of the Korean Society of Mechanical Engineers B, 35(3), 321–330. doi:10.3795/ksme-b.2011.35.3.321
    Publisher
    The Korean Society of Mechanical Engineers
    Journal
    Transactions of the Korean Society of Mechanical Engineers B
    DOI
    10.3795/KSME-B.2011.35.3.321
    ae974a485f413a2113503eed53cd6c53
    10.3795/KSME-B.2011.35.3.321
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

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