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Experimental Study on Flame Extension and Pattern Analysis of Jet Fire Impinging Wood Plates

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Abstract

Jet fires generally leave patterns on the surface of the plate, which can be helpful for fire investigators to find the source and cause of fire incidents. However, the interaction between jet fires and wood plates still lacks research. This paper investigates the flame extension and pattern of jet fire impinging wood plates under strong plume conditions. The flame extension length beneath the plate is intensely studied. Moreover, an attempt is made to relate the fire patterns left by the jet fire impinging on the wood plate with the fire characteristic parameters. The results indicate that the flame extension length under the plates is strongly related to the visible free height, nozzle-plate height, and gas fuel velocity. The radius of the fire pattern is highly correlated with the flame extension length, and a new relationship equation between the radius of the fire pattern and the flame extension length is proposed. The area of the fire pattern is related to three characteristic parameters, the fuel flow rate, nozzle diameter, and nozzle-plate height, and the prediction equation of the fire pattern area is given to collapse all the experimental data well to provide theoretical support for fire investigation work.

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Acknowledgements

This work was supported by the National Key Technology R&D Program (No. 2021YFB2402001), Suzhou Science and Technology Plan Project (No. SS202138), and Fundamental Research Funds for the Central Universities (Grant No. WK2320000053).

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Authors and Affiliations

  1. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, 230026, China

    Xinxing Chen, Xiaoyang Yu, Yunru Lin, Guangying Li, Jiyun Wang & Ruowen Zong

  2. Suzhou Key Laboratory of Urban Public Safety, Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou, 215123, China

    Xinxing Chen, Xiaoyang Yu & Ruowen Zong

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  1. Xinxing Chen
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Correspondence to Ruowen Zong.

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Chen, X., Yu, X., Lin, Y. et al. Experimental Study on Flame Extension and Pattern Analysis of Jet Fire Impinging Wood Plates. Fire Technol 59, 359–380 (2023). https://doi.org/10.1007/s10694-022-01338-8

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