The fuel dispersion and explosion laws are important for safety design of fuel charge, concentration prediction of accidental release vapor cloud and prevention of fire and explosion accidents. The charge structure is an important factor in determining the fuel dispersion and explosion performance. Experiments and numerical simulations are carried out for cylindrical, square and fan-shaped charge structures. The dispersion process, concentration distribution, explosion overpressure, component reaction and safety radius of 11 kg solid-liquid-gas propylene oxide (PO) are obtained. The results show that square and fan-shaped structure have local enhancement effect. Compared with cylindrical structure, the dispersion distance of square at 0° and fan-shape at 45° increase by 10.13 % and 14.39 % respectively. The peak overpressure increased by 8.85 % and 4.73 %. At 4 m, the remaining fuel of the three structures is 39.13 %, 22.34 % and 17.20 %, respectively. The equivalent safety radius is 14.20 m, 14.80 m and 14.27 m respectively.

中文翻译：

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不同装药结构的多相燃料的分散和爆炸特性


燃料分散和爆炸规律对于燃料装药的安全设计、意外释放蒸气云的浓度预测以及火灾和爆炸事故的预防具有重要意义。装药结构是决定燃料分散和爆炸性能的重要因素。对圆柱形、方形和扇形电荷结构进行了实验和数值模拟。得到 11 kg 固液气环氧丙烷 （PO） 的分散过程、浓度分布、爆炸超压、组分反应和安全半径。结果表明，方形和扇形结构具有局部增强效果。与圆柱形结构相比，0° 处的方形和 45° 处的扇形色散距离分别增加了 10.13 % 和 14.39 %。峰值超压分别增加了 8.85 % 和 4.73 %。在 4 m 处，三个结构的剩余燃料分别为 39.13 %、22.34 % 和 17.20 %。等效安全半径分别为 14.20 m、14.80 m 和 14.27 m。