基于Monte-Carlo方法的爆炸碎片飞散仿真

Simulation of Explosive Debris Dispersion Based on Monte-Carlo Method

为合理预测某型液体运载火箭爆炸生成碎片的危害区域,保证地面发射场设施设备及人员的安全,采用Monte-Carlo方法模拟了爆炸碎片的飞散轨迹,分析了碎片初速和火箭爆心高度对碎片散布的影响。结果表明:火箭爆炸碎片初始速度是影响碎片最大飞行距离的重要因素,火箭爆炸碎片的最大飞行距离随着碎片初始速度的增大而增大,但随着碎片初始速度的增大,碎片最大飞行距离的增长幅度慢慢减小;随着爆心高度的不断增加,爆炸碎片飞行距离概率分布曲线的变化程度不大。本文使用美国PYRO项目中的爆炸试验数据,验证了数值仿真的可靠性和爆炸碎片飞散模型的可用性。

In order to reasonably predict the hazardous area of debris generated by the explosion of a liquid launch vehicle and ensure the safety of facilities and personnel in the ground launching site,the Monte-Carlo method was used to simulate the trajectory of debris dispersion,and the effects of debris initial velocity and rocket core height on debris dispersion were analyzed.The results show that the initial velocity of rocket explosive debris is an important factor affecting the maximum flying distance of debris.The maximum flying distance of rocket explosive debris increases with the increase of the initial velocity of debris,but with the increase of the initial velocity of debris,the increase range of the maximum flying distance of debris decreases slowly.Lines do not change much.In this paper,the reliability of numerical simulation and the availability of explosive debris dispersion model are verified by using the explosion test data of PYRO project in the United States.