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    Elevated pressure increases the effect of electric fields on ionic wind in methane premixed jet flames

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    elevated pressure.pdf
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    2.698Mb
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    PDF
    Description:
    Accepted manuscript
    Embargo End Date:
    2022-11-12
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    Type
    Article
    Authors
    Park, Sun Ho
    Son, Jin Woo
    Park, Jeong
    Cha, Min Suk cc
    KAUST Department
    Clean Combustion Research Center
    Clean Combustion Research Center (CCRC), Physical Science & Engineering Division (PSE), 4700 King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    KAUST Grant Number
    BAS/1/1384-01-01
    Date
    2020-11-12
    Online Publication Date
    2020-11-12
    Print Publication Date
    2020-11
    Embargo End Date
    2022-11-12
    Submitted Date
    2019-10-27
    Permanent link to this record
    http://hdl.handle.net/10754/665981
    
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    Abstract
    Electric fields are useful for enhancing stability limits of flames, increasing the overall burning rate and reducing soot emissions. The electric body force has been known as a key element behind the aforemen- tioned augmentation, and recent studies have provided clear picture for the resulted flow modification. In this study, we investigate the effects of pressure on an ionic wind by applying transverse electric fields to methane premixed jet flames in a pressurized chamber up to 2 atm. We investigated the voltage-current re- sponse by varying the pressure, the equivalence ratio of the mixture, and the flow rate. We found that the saturated current for lean and stoichiometric mixtures was not affected by the pressure, while the saturated current of rich premixed flames changed significantly. We developed a model to predict the voltage-current behavior and the ion-production rate, which we validated using experimental results. Based on our flow field measurements, we found that elevated pressure conditions enhanced ionic wind-driven mass transport. These results support the use of electric fields in a high-pressure environment.
    Citation
    Park, S. H., Son, J. W., Park, J., & Cha, M. S. (2020). Elevated pressure increases the effect of electric fields on ionic wind in methane premixed jet flames. Proceedings of the Combustion Institute. doi:10.1016/j.proci.2020.11.003
    Sponsors
    The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST) under award number BAS/1/1384-01-01.
    Publisher
    Elsevier BV
    Journal
    Proceedings of the Combustion Institute
    DOI
    10.1016/j.proci.2020.11.003
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S1540748920307021
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.proci.2020.11.003
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

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