Experimental study of flame extension behavior under different curved ceilings in underground spaces.
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| Title: | Experimental study of flame extension behavior under different curved ceilings in underground spaces. |
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| Authors: | Fan, Xinyang1 (AUTHOR), Tang, Fei1 (AUTHOR) ftang@ustc.edu.cn, Zhu, Nannan1 (AUTHOR), Zhang, Xiaolei1 (AUTHOR), Huang, Yajun2 (AUTHOR), Hu, Longhua1 (AUTHOR) |
| Source: | Journal of Thermal Analysis & Calorimetry. Jun2025, Vol. 150 Issue 11, p8671-8679. 9p. |
| Subjects: | Flame spread, Ceilings, Fire prevention, Heat release rates, Flame, Underground areas, Fire risk assessment |
| Abstract: | As a common form of underground spaces, the geometry and spatial structure of curved ceilings significantly affect flame extension behavior. This paper comprehensively examines the effects of various fire heat release rates and burner ceiling distances, experimentally investigating the evolution of flame extension length and spread area under different curved ceiling conditions. The results indicate that the transverse flame extension length of ceiling jet increases with the ceiling radius; while, the longitudinal flame extension length decreases. These phenomena were elucidated through an analysis of the influence by curved ceiling structure and the buoyancy component on the unburned fuel flow beneath the ceiling. A model of normalized transverse flame extension length for both horizontal and curved ceilings was established by incorporating a ceiling radius influencing factor ℓ of arced structures. Additionally, the ceiling radius had a minimal effect on the normalized flame extension area, then the dimensionless longitudinal flame extension length prediction model was proposed, demonstrating strong agreement between experimental and predicted values. This study offers theoretical support for the fire safety design of curved ceiling buildings. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Thermal Analysis & Calorimetry is the property of Springer Nature 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 |
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| Header | DbId: egs DbLabel: Engineering Source An: 186779482 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Experimental study of flame extension behavior under different curved ceilings in underground spaces. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Fan%2C+Xinyang%22">Fan, Xinyang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tang%2C+Fei%22">Tang, Fei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ftang@ustc.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhu%2C+Nannan%22">Zhu, Nannan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Xiaolei%22">Zhang, Xiaolei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Huang%2C+Yajun%22">Huang, Yajun</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hu%2C+Longhua%22">Hu, Longhua</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Thermal+Analysis+%26+Calorimetry%22">Journal of Thermal Analysis & Calorimetry</searchLink>. Jun2025, Vol. 150 Issue 11, p8671-8679. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Flame+spread%22">Flame spread</searchLink><br /><searchLink fieldCode="DE" term="%22Ceilings%22">Ceilings</searchLink><br /><searchLink fieldCode="DE" term="%22Fire+prevention%22">Fire prevention</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+release+rates%22">Heat release rates</searchLink><br /><searchLink fieldCode="DE" term="%22Flame%22">Flame</searchLink><br /><searchLink fieldCode="DE" term="%22Underground+areas%22">Underground areas</searchLink><br /><searchLink fieldCode="DE" term="%22Fire+risk+assessment%22">Fire risk assessment</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: As a common form of underground spaces, the geometry and spatial structure of curved ceilings significantly affect flame extension behavior. This paper comprehensively examines the effects of various fire heat release rates and burner ceiling distances, experimentally investigating the evolution of flame extension length and spread area under different curved ceiling conditions. The results indicate that the transverse flame extension length of ceiling jet increases with the ceiling radius; while, the longitudinal flame extension length decreases. These phenomena were elucidated through an analysis of the influence by curved ceiling structure and the buoyancy component on the unburned fuel flow beneath the ceiling. A model of normalized transverse flame extension length for both horizontal and curved ceilings was established by incorporating a ceiling radius influencing factor ℓ of arced structures. Additionally, the ceiling radius had a minimal effect on the normalized flame extension area, then the dimensionless longitudinal flame extension length prediction model was proposed, demonstrating strong agreement between experimental and predicted values. This study offers theoretical support for the fire safety design of curved ceiling buildings. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Thermal Analysis & Calorimetry is the property of Springer Nature 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: Identifiers: – Type: doi Value: 10.1007/s10973-024-13664-w Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 8671 Subjects: – SubjectFull: Flame spread Type: general – SubjectFull: Ceilings Type: general – SubjectFull: Fire prevention Type: general – SubjectFull: Heat release rates Type: general – SubjectFull: Flame Type: general – SubjectFull: Underground areas Type: general – SubjectFull: Fire risk assessment Type: general Titles: – TitleFull: Experimental study of flame extension behavior under different curved ceilings in underground spaces. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Fan, Xinyang – PersonEntity: Name: NameFull: Tang, Fei – PersonEntity: Name: NameFull: Zhu, Nannan – PersonEntity: Name: NameFull: Zhang, Xiaolei – PersonEntity: Name: NameFull: Huang, Yajun – PersonEntity: Name: NameFull: Hu, Longhua IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 13886150 Numbering: – Type: volume Value: 150 – Type: issue Value: 11 Titles: – TitleFull: Journal of Thermal Analysis & Calorimetry Type: main |
| ResultId | 1 |
