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Experimental study of non-monotonous sidewall effect on flame characteristics and burning rate of n-heptane pool fires
University of Science and Technology of China, China.
RISE, SP – Sveriges Tekniska Forskningsinstitut. University of Science and Technology of China, China.
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Brandteknik, skydd (BRs ).ORCID iD: 0000-0002-9340-6768
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2015 (English)In: Fuel, ISSN 0016-2361, E-ISSN 1873-7153, Vol. 145, p. 228-233Article in journal (Refereed) Published
Abstract [en]

To study the influence of sidewall effect on flame characteristics and burning rate, a series of experiments with heptane pools was conducted. The results showed that as the fires were placed close to the sidewall, the flames inclined to the sidewall due to the restriction on air entrainment, and the burning rate increased on the whole, which could be mainly due to the enhanced radiation from the heated sidewall and ceiling flame. However, regardless of fuel pool shape, the burning rate obtained the peak value when the fire was near the sidewall, rather than attached to the sidewall, resulting from less flame radiation from the vertical flame part to the fuel in the latter case. The ratio of longitudinal ceiling flame length to transverse length tended to decrease with the fire moving close to the sidewall. For cases with the largest length and wall fires, the ratio was nearly 0.5, which could be explained according to the theory of mirror effect. Also, due to the non-monotonous sidewall effect, a higher burning rate did not necessarily lead to a larger ceiling flame length.

Place, publisher, year, edition, pages
2015. Vol. 145, p. 228-233
Keywords [en]
Sidewall effect, Aspect ratio, Burning rate, Flame characteristics
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-6772DOI: 10.1016/j.fuel.2014.12.085Scopus ID: 2-s2.0-84921341012Local ID: 19165OAI: oai:DiVA.org:ri-6772DiVA, id: diva2:964612
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2023-06-08Bibliographically approved

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Li, Ying ZhenIngason, Haukur

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