| Title: | Thin-layer boilover of large-scale diesel pool fires at sub-atmospheric pressure |
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| Authors: | ID Zhao, Jinlong (Author)
ID Zhang, Qingyuan (Author)
ID Hu, Zhenqi (Author)
ID Kang, Rongxue (Author)
ID Jomaas, Grunde (Author)
ID Yang, Rui (Author) |
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| Files: |  PDF - Presentation file. (1,04 MB, This file will be accessible after 10.12.2025)
MD5: 0D624F6A0061976B9DAEC09544C4A9C7
 URL - Source URL, visit https://doi.org/10.1016/j.fuel.2023.130482
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  ZAG - Slovenian National Building and Civil Engineering Institute
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| Abstract: | As thin-layer burning of fuels on water are often followed by thin-layer boilover fires, particularly during the firefighting process, an experimental and numerical study was undertaken to address key aspects of such fires, especially in plateau areas (i.e., sub-atmospheric pressure). In the thin-layer boilover experiments at sub-atmospheric pressure (69 kPa), diesel was used as the fuel in five circular steel trays (ranging from 0.4 m to 1.2 m in diameter) and a square steel tray (side length of 2.5 m). The burning process, and especially the continuous boilover stage, was presented and the corresponding boilover intensity, time to boilover onset and boilover time interval were measured and analyzed. The results show that the flame height increased sharply at the initial boilover, while this increasing range gradually became weak for the subsequent boilovers. The initial boilover intensity showed a linear dependency on the fuel layer thickness at the time of boilover, and the slope of the boilover intensity line decreased with increasing pan area. Eventually, the effect of pan area on boilover intensity became limit. Moreover, a predictive model for the boilover intensity was established based on dimensionless analysis. The initial boilover onset time under the sub-atmospheric pressure was delayed compared with that under atmospheric pressure. The corresponding predictive correlation (for 69 kPa) with different diameter and fuel thickness was developed based on the one-dimension two-layer conduction model. In the end, the boilover time interval decreased with the boilover times, closing to uninterrupted boilover eventually. This work enriches the thin-layer boilover behavior experimental data at sub-atmospheric pressure and provides guidance for the fuel storage safety. |
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| Keywords: | thin-layer boilover, boilover intensity, time to boilover onset, boilover time interval, sub-atmospheric fires |
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| Publication status: | Published |
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| Publication version: | Author Accepted Manuscript |
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| Publication date: | 10.12.2023 |
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| Publisher: | Elsevier Science |
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| Year of publishing: | 2024 |
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| Number of pages: | 1-10 str. |
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| Numbering: | [article no.] 130482, Vol. 360 |
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| PID: | 20.500.12556/DiRROS-17808  |
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| UDC: | 53 |
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| ISSN on article: | 1873-7153 |
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| DOI: | 10.1016/j.fuel.2023.130482 |
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| COBISS.SI-ID: | 180773891 |
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| Copyright: | © 2023 Published by Elsevier Ltd. |
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| Note: | Nasl. z nasl. zaslona;
Opis vira z dne 12. 1. 2024;
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| Publication date in DiRROS: | 16.01.2024 |
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| Views: | 589 |
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| Downloads: | 131 |
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