ABSTRACT Spray fire is one of the most frequent fire accidents in ship engine compartments, drawing much attention to spray fire safety. Currently, a series of spray fire tests was conducted in a 2.0 m (L) × 2.0 m (W) × 1.88 m (H) enclosed compartment. Experimental results indicate that the combustion process can be divided into three stages and the injecting pressure has significant effect on the flame height, gas temperature, oxygen concentration, etc. The dimensionless flame height is proportional to the 1/9 power of the dimensionless heat release rate. With the increase in injecting pressure, both the slope of gas temperature rise and maximum average gas temperature increase, meanwhile the corresponding oxygen concentration and average oxygen concentration all decreases linearly. For estimating the average gas temperature and average oxygen concentration, two corresponding equations were established and verified by the current measured data. Moreover, the dimensionless gas temperature correlates well with the dimensionless oxygen concentration.

中文翻译：

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密闭室喷火情景下火焰高度、气体温度和氧气浓度分布的实验研究

摘要 喷雾火灾是船舶发动机舱最常见的火灾事故之一，喷雾防火安全备受关注。目前，在一个 2.0 m (L) × 2.0 m (W) × 1.88 m (H) 的封闭隔间中进行了一系列喷火试验。实验结果表明，燃烧过程可分为三个阶段，喷射压力对火焰高度、气体温度、氧气浓度等有显着影响。无量纲火焰高度与无量纲放热的1/9次方成正比。速度。随着注入压力的增加，气体温度上升的斜率和最高平均气体温度均增加，同时相应的氧浓度和平均氧浓度均呈线性下降。为了估计平均气体温度和平均氧气浓度，建立了两个相应的方程，并通过当前的测量数据进行了验证。此外，无量纲的气体温度与无量纲的氧浓度有很好的相关性。