中文摘要：

火焰游走是在通风不足的受限空间中出现的一种特殊火行为.为探讨无开口空间池火能否出现游走火,在17.55m^3无开口封闭空间内进行了庚烷池火实验.实验结果表明,燃料沸腾后无开口封闭空间出现了游走火现象;燃料沸腾产生大量可燃蒸气及卷吸到火焰区的氧气含量过低,导致空间内在燃料区以外较远的区域存在满足燃烧条件的蒸气浓度和氧气浓度是游走火出现的根本原因;油池位置高度越高,火焰游走距离越远,而游走火出现时间和持续时间与油池位置增加并非简单递增或递减关系.

英文摘要：

Ghosting fire is a unique fire behavior which usually occurs under specific conditions with low ventilation.A series of fire tests were conducted in a 17.55m3 closed compartment without vent to find out whether ghosting fires occur in compartments under no vent conditions.The results show that ghosting fires occurred in all the 17.55m3 fire tests when fuels boiled.The large amounts combustible gases produced by boiling and low oxygen entrained to flame zone result in redundant combustible gases flowing to somewhere far from the fuel zone,where the gases mix with oxygen and the ignition condition is reached,causing ghosting fires to occur.The travel distances of ghosting fires become longer as the pool position gets higher,while the beginning time and duration of ghosting fires with regard to the pool position do not simply increase or decrease.