Show simple item record

dc.contributor.authorKang, Min Sung
dc.contributor.authorPark, Sun Ho
dc.contributor.authorYoo, Chun Sang
dc.contributor.authorPark, Jeong
dc.contributor.authorChung, Suk Ho
dc.date.accessioned2020-09-30T12:50:11Z
dc.date.available2020-09-30T12:50:11Z
dc.date.issued2020-09-17
dc.date.submitted2019-11-02
dc.identifier.citationKang, M. S., Park, S. H., Yoo, C. S., Park, J., & Chung, S. H. (2020). Effect of core metal on flame spread and extinction for horizontal electrical wire with applied AC electric fields. Proceedings of the Combustion Institute. doi:10.1016/j.proci.2020.05.060
dc.identifier.issn1540-7489
dc.identifier.doi10.1016/j.proci.2020.05.060
dc.identifier.urihttp://hdl.handle.net/10754/665384
dc.description.abstractThe effect of metal core on flame spread behavior over polyethylene (PE)-insulated electrical wire was experimentally investigated by varying applied AC voltage (VAC) and frequency (fAC). The present experimental results with Cu-core were compared with those conducted previously with NiCr-core. Flame spread rate (FSR) with Cu-core for the baseline case with no electric field was larger than that with NiCr-core. Both FSR and flame size were appreciably influenced by applied AC electric fields and behaved differently for Cu- and NiCr-cores. For Cu-core, FSR behavior could be classified into four regimes as fAC increases: increasing FSR (regime I), decreasing FSR (II), and again increasing FSR (III) and decreasing FSR (IV). While for NiCr-core, it has been categorized into two regimes I and II. FSR behavior was qualitatively similar to that of flame width in regimes I, II, and IV. While such a relationship was not satisfied in regime III, which can be attributed to the formation of molten PE film in the burnt wire side as well as the formation of globular molten PE in front of spreading flame edge, emphasizing the important role of complex molten PE behavior. Molten PE dripping was observed for NiCr-core, while for Cu-core, such dripping was not observed. Electrospray and di-electrophoresis phenomena occurred with Cu-core along with a formation of molten PE film on the burnt wire side via continuous di-electrophoresis phenomenon from molten PE droplet. When the frequency was excessive, flame extinction occurred via two routes: appreciable reduction of flame size (both for Cu- and NiCr-cores) and detachment of molten PE (for Cu-core). These extinction frequencies were correlated well with the voltage.
dc.description.sponsorshipThis work was conducted under the framework of the Research and Development Program of the Korea Institute of Energy Research (B9-2431). SHC was supported by the King Abdullah University of Science and Technology (KAUST). CSY was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (NRF-2018R1A2A2A05018901).
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S1540748920304624
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Proceedings of the Combustion Institute. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Proceedings of the Combustion Institute, [, , (2020-09-17)] DOI: 10.1016/j.proci.2020.05.060 . © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleEffect of core metal on flame spread and extinction for horizontal electrical wire with applied AC electric fields
dc.typeArticle
dc.contributor.departmentCombustion and Laser Diagnostics Laboratory
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalProceedings of the Combustion Institute
dc.rights.embargodate2022-09-17
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Mechanical Engineering, Pukyong National University, Busan, Republic of Korea.
dc.contributor.institutionDepartment of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Republic of Korea.
kaust.personChung, Suk Ho
dc.date.accepted2020-05-24
refterms.dateFOA2020-10-05T05:28:43Z
dc.date.published-online2020-09-17
dc.date.published-print2020-09


Files in this item

Thumbnail
Name:
Metal-core-repository.pdf
Size:
1001.Kb
Format:
PDF
Description:
Accepted manuscript
Embargo End Date:
2022-09-17

This item appears in the following Collection(s)

Show simple item record