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Abstract
Flame spread aspect along the pool surface of gelled (O/W emulsified) II-octane with high internal phase ratio was investigated from the viewpoint of spilled-fuel fire prevention. The temperature field in the vicinity of the spreading flame front was measured by thermocouples (chromel-alurnel, 0.1 mm dia.) and Mach-Zehnder interferometry, and temperature histories on the unburned surface and in the gas phase adjacent to the surface were shown.From the measured results, the mode of heat transfer from the spreading flame to the unburned pool surface was estimated. The dependence of flame spread velocity on the initial temperature of gelled η-octane and on the oil content in gel (internal phase ratio of O/W emulsion) were also investigated.