Temperature Distribution Law of Cable Ceiling in L-shaped Utility Tunnel under the Action of Fine Water Mist.
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| Title: | Temperature Distribution Law of Cable Ceiling in L-shaped Utility Tunnel under the Action of Fine Water Mist. |
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| Authors: | Bai, Zhenpeng1 baiyi1056@126.com, Liu, Yueming2 lym1507546467@qq.com, Ma, Dan3 542101040229@zzuli.edu.cn, Yao, Haowei4 yaohaowei@zzuli.edu.cn |
| Source: | IAENG International Journal of Applied Mathematics. Jul2026, Vol. 56 Issue 7, p2465-2472. 8p. |
| Subjects: | Temperature distribution, Firefighting, Microdroplets, Fire prevention |
| Abstract: | The utility tunnel, characterized by its elongated and confined geometric configuration, significantly exacerbates the rapid propagation of fire during emergency incidents. In this paper, two distinct fire sources were deliberately employed to investigate the sensitivity sequence of four factors that affect fire suppression within L-shaped utility tunnels, with a specific focus on analyzing the temperature distribution patterns in cable fires occurring in such tunnels. The results revealed a nonlinear relationship between nozzle arrangement density and the fire-extinguishing performance of the fine water mist fire-extinguishing system. Although an increase in the flow rate of fine water mist nozzles can enhance fire-extinguishing capacity, this enhancement follows a nonlinear trajectory. Excessive flow rates are impeded by the flow field inside the cabin, ultimately leading to a decrease in overall efficiency. During the fine water mist fire extinguishment process, a higher fire source power results in a slower rate of temperature decline and lower extinguishing efficiency. Additionally, the ventilation rate also plays a crucial role in temperature control within the L-shaped pipe gallery. In the absence of wind, heat from the fire source accumulates, while a wind speed of 0.4 m/s intensifies the fire, causing a temperature rise. However, continuously increasing the wind speed can suppress cable combustion and lower the fire source temperature. This study thus offers valuable insights for improving fire safety measures in L-shaped utility tunnels. [ABSTRACT FROM AUTHOR] |
| Copyright of IAENG International Journal of Applied Mathematics is the property of International Association of Engineers (IAENG) and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 195026878 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Temperature Distribution Law of Cable Ceiling in L-shaped Utility Tunnel under the Action of Fine Water Mist. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Bai%2C+Zhenpeng%22">Bai, Zhenpeng</searchLink><relatesTo>1</relatesTo><i> baiyi1056@126.com</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Yueming%22">Liu, Yueming</searchLink><relatesTo>2</relatesTo><i> lym1507546467@qq.com</i><br /><searchLink fieldCode="AR" term="%22Ma%2C+Dan%22">Ma, Dan</searchLink><relatesTo>3</relatesTo><i> 542101040229@zzuli.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Yao%2C+Haowei%22">Yao, Haowei</searchLink><relatesTo>4</relatesTo><i> yaohaowei@zzuli.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22IAENG+International+Journal+of+Applied+Mathematics%22">IAENG International Journal of Applied Mathematics</searchLink>. Jul2026, Vol. 56 Issue 7, p2465-2472. 8p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Temperature+distribution%22">Temperature distribution</searchLink><br /><searchLink fieldCode="DE" term="%22Firefighting%22">Firefighting</searchLink><br /><searchLink fieldCode="DE" term="%22Microdroplets%22">Microdroplets</searchLink><br /><searchLink fieldCode="DE" term="%22Fire+prevention%22">Fire prevention</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The utility tunnel, characterized by its elongated and confined geometric configuration, significantly exacerbates the rapid propagation of fire during emergency incidents. In this paper, two distinct fire sources were deliberately employed to investigate the sensitivity sequence of four factors that affect fire suppression within L-shaped utility tunnels, with a specific focus on analyzing the temperature distribution patterns in cable fires occurring in such tunnels. The results revealed a nonlinear relationship between nozzle arrangement density and the fire-extinguishing performance of the fine water mist fire-extinguishing system. Although an increase in the flow rate of fine water mist nozzles can enhance fire-extinguishing capacity, this enhancement follows a nonlinear trajectory. Excessive flow rates are impeded by the flow field inside the cabin, ultimately leading to a decrease in overall efficiency. During the fine water mist fire extinguishment process, a higher fire source power results in a slower rate of temperature decline and lower extinguishing efficiency. Additionally, the ventilation rate also plays a crucial role in temperature control within the L-shaped pipe gallery. In the absence of wind, heat from the fire source accumulates, while a wind speed of 0.4 m/s intensifies the fire, causing a temperature rise. However, continuously increasing the wind speed can suppress cable combustion and lower the fire source temperature. This study thus offers valuable insights for improving fire safety measures in L-shaped utility tunnels. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of IAENG International Journal of Applied Mathematics is the property of International Association of Engineers (IAENG) and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 2465 Subjects: – SubjectFull: Temperature distribution Type: general – SubjectFull: Firefighting Type: general – SubjectFull: Microdroplets Type: general – SubjectFull: Fire prevention Type: general Titles: – TitleFull: Temperature Distribution Law of Cable Ceiling in L-shaped Utility Tunnel under the Action of Fine Water Mist. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Bai, Zhenpeng – PersonEntity: Name: NameFull: Liu, Yueming – PersonEntity: Name: NameFull: Ma, Dan – PersonEntity: Name: NameFull: Yao, Haowei IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 19929978 Numbering: – Type: volume Value: 56 – Type: issue Value: 7 Titles: – TitleFull: IAENG International Journal of Applied Mathematics Type: main |
| ResultId | 1 |
