NDLI: Modeling on n-Heptane Pool Fire Behavior in an Altitude Chamber

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Liu, Quanyi Yao, Wei Yin, Jiusheng Yang, Rui Zhang, Hui
Copyright Year	2013
Abstract	Airplane as one of the important transport vehicles in our life, its safety problem related to in-flight fire has attracted a wide-spread attention. The combustion behavior of the cabin fire in flight shows some special characteristics because of the high-altitude environment with low-pressure and low oxygen concentration. A low-pressure chamber of size 2 m×3 m×2 m has been built to simulate high-altitude environments, where multiple static pressures for pool fire tests can be configured in the range between standard atmospheric pressure 101.3KPa and 30KPa. Two different sizes of pool fires were tested. Then corresponding modeling were conducted by a LES code FDS V5.5 to examine the mechanism of pressure effect on the n-Heptane pool fire behavior. The burning of liquid fuel was modeled by a Clausius-Clapeyron relation based liquid pyrolysis model. The modeling data was validated against the experimental measurements. The mass burning rate of free-burning pool fire decreases with the decreasing of pressure, which was observed from the modeling to be due to the reduction of flame heat feedback to the fuel surface. Under low pressure, the fire plume temperature increases for the same burning rate. The mechanism of pressure effect on fire behavior was analyzed based on the modeling data.
File Format	PDF
ISBN	9780791856345
DOI	10.1115/IMECE2013-62367
Volume Number	Volume 8A: Heat Transfer and Thermal Engineering
Conference Proceedings	ASME 2013 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2013-11-15
Publisher Place	San Diego, California, USA
Access Restriction	Subscribed
Subject Keyword	Altitude chamber Fire dynamic simulator (fds) Pool fire Modeling Low pressure Hypobaric chambers Liquid pool fires Heptane Pressure Fire
Content Type	Text
Resource Type	Article

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