Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 369, Issue -, Pages 116-124Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2019.01.111
Keywords
Multiple pool fires; Flame height; Burning rate; Air entrainment; Heat feedback
Categories
Funding
- National Natural Science Foundation of China (NSFC) [51722605]
- National Post-doctoral Program for Innovative Talents [BX20180288]
- National Program for Support of Top-Notch Young Professionals
- Youth Innovation Promotion Association of CAS [2015386]
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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.
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