Effects of pool size and spacing on burning rate and flame height of two square heptane pool fires

JOURNAL OF HAZARDOUS MATERIALS

卷:369

Article

Wan, Huaxian¹  Gao, Zihe¹  Ji, Jie^1,2  Zhang, Yongming¹  Li, Kaiyuan³  Wang, Liangzhu⁴ 

[1] Univ Sci & Technol China, State Key Lab Fire Sci, JinZhai Rd 96, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, Inst Adv Technol, Hefei 230088, Anhui, Peoples R China

[3] Univ Lille Nord France, ENSCL, UMET ISP R2Fire, Cite Sci Bat C7,BP 90108, F-59652 Villeneuve Dascq, France

[4] Concordia Univ, Dept Bldg Civil & Environm Engn, 1445 Maisonneuve Blvd West, Montreal, PQ H3G 1M8, Canada

关键词: Multiple pool fires;    Flame height;    Burning rate;    Air entrainment;    Heat feedback;   

DOI  :  10.1016/j.jhazmat.2019.01.111

来源: Elsevier

【 摘 要 】

The interaction of multiple pool fires might lead to higher burning rate and flame height than single pool fire, raising the possibility of fire ignition and flame spread and increasing the risks to people, buildings and environment. To quantify the burning rate and flame height of multiple pool fires from the view of physical mechanism, this paper presents an experimental study on two identical square pool fires. Heptane was used as fuel. The pool size and spacing were varied. Results showed that both the burning rate and flame height change non-monotonically with spacing. From the view of air entrainment, a correlation for the flame height of two pool fires is developed involving pool size, spacing and the flame height of zero spacing. The comparison with experimental results shows that the developed correlation is suitable for two heptane or propane fires. A theoretical study based on energy balance at one of the pool surfaces is performed to evaluate the burning rate of two fires, which is finally expressed as a function of pool size, spacing, burning rate and the flame height of single fire. The proposed model is validated using the experimental and literature data, which presents a reasonable reliability.

【 授权许可】

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