Aviation kerosene is the main fuel in aerospace industry. In order to investigate the explosion behaviors of aviation kerosene, the explosion experiments were conducted using the 20-L liquid explosion testing system. The influence factors, including mist concentration , ignition delay time , liquid injection pressure , and ignition energy were discussed, and the explosion mechanism of aviation kerosene droplet was analyzed as well. Experimental results showed that minimum explosible concentration (MEC) of aviation kerosene mist was 140 g/m³. The maximum explosion pressure (), maximum pressure rise rate ((d/d)), explosion index () and average flame propagation velocity () first rose and then declined, while combustion time () showed the opposite trend with increasing . 600 g/m was the optimal concentration. , (d/d), and showed an inverted “U-shaped” trend, while presented a positive “U-shaped” trend with . The optimal ignition delay time was 100 ms. , (d/d), , and all gave a linear positive correlation, while presented a linear negative correlation with both and . The influence of and on (d/d), , and was greater than that on and . could be used to approximate the flame propagation velocity in simplifying calculations. The relationship between , and , , and was also concluded. The mass evaporation rate , the trend of the diameter over time d/d and the trend of the temperature over time d/d of aviation kerosene droplet were obtained. The evaporation model and multizone combustion model of aviation kerosene vapor-liquid two-phase mixture was discussed in detail.

中文翻译：

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航空煤油在20L球形容器中的爆炸行为


航空煤油是航空航天工业的主要燃料。为了研究航空煤油的爆炸行为，利用20L液体爆炸试验系统进行了爆炸实验。讨论了油雾浓度、点火延迟时间、喷液压力、点火能量等影响因素，并分析了航空煤油液滴的爆炸机理。实验结果表明，航空煤油雾的最低爆炸浓度（MEC）为140 g/m3。最大爆炸压力()、最大压力上升速率((d/d))、爆炸指数()和平均火焰传播速度()先上升后下降，而燃烧时间()则随着 的增加呈现相反的趋势。 600 g/m 是最佳浓度。 ，（d/d），呈现倒“U”型走势，而 呈现正“U”型走势。最佳点火延迟时间为100 ms。 、 (d/d)、 、 和 均呈线性正相关，而与 和 均呈线性负相关。和 对(d/d)、 和 的影响大于 和 的影响。可用于近似火焰传播速度以简化计算。 、 、 、 、 之间的关系也已得出。获得了航空煤油液滴的质量蒸发率、直径随时间d/d的变化趋势以及温度随时间d/d的变化趋势。详细讨论了航空煤油汽液两相混合物的蒸发模型和多区燃烧模型。