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针对现有液体推进剂爆炸实验危险性高、耗费大以及实验条件严格及重复性差等缺点及难点,利用Autodyn软件分别对一维和二维两种情况下液体推进剂爆炸产生的冲击波进行数值模拟,并与经验预测及相关实验研究进行比较分析。研究结果表明:在距离大于10m时,利用软件模拟计算的结果与经验公式一致性较好,两者偏差不超过5%。数值模拟不仅可以准确捕捉冲击波峰值压力,而且还能够较准确地得到液体推进剂在空气中爆炸时冲击波的衰减过程,为液体推进剂爆炸事故的毁伤评估和安全防护奠定了基础。
Aiming at the shortcomings and difficulties of the existing liquid propellant explosion experiments, such as high risk, high cost, severe experimental conditions and poor repeatability, the numerical simulation of the shock wave generated by the explosion of liquid propellants in one-dimensional and two- And compared with the empirical prediction and related experimental studies. The results show that when the distance is more than 10m, the result of software simulation is in good agreement with the empirical formula, and the deviation between the two is less than 5%. Numerical simulation not only captures the peak pressure of shock wave accurately, but also can obtain the attenuation process of the shock wave when the liquid propellant explodes in the air accurately, which lays the foundation for the damage assessment and safety protection of liquid propellant explosion accident.