基于欧拉法的核爆烟尘颗粒群运动模拟  

Simulation of Particle Population Motion in Nuclear Explosion Fallout based on Eulerian Method

作　　者：郭思禹 郑伟 张伟 郭俊[1] GUO Siyu;ZHENG Wei;ZHANG Wei;GUO Jun(Xi'an Jiaotong University,Xi'an,710025;Beijing Institute of Astronautical Systems Engineering,Beijing,100076)

机构地区：[1]西安交通大学,西安710025 [2]北京宇航系统工程研究所,北京100076

出　　处：《导弹与航天运载技术（中英文）》2023年第5期113-117,共5页Missiles and Space Vehicles

摘　　要：为了评估和预测核爆烟尘可能产生的力学损伤效应,基于欧拉方法在二维圆柱坐标系中建立了颗粒群运动仿真模型,对颗粒群空间传输进行了数值求解。研究结果表明,该模型能够对静风条件下核爆烟尘各粒径颗粒群速度、质量进行时空表征,与美国经典模型相比,本模型具备较高的结果可信度与较低的数秒内时间成本,可用来模拟核爆烟尘颗粒群运动。In order to address the possible mechanical damage effects of nuclear explosion fallout,a particle population motion simulation model based on the Eulerian method in a two-dimensional cylindrical coordinate system is developed,and the spatial transport of the particle population is solved numerically,which can characterize the velocity and mass of the particle population of each particle size under static wind conditions.In comparison with the classical US model,this model has high confidence in the results and the time cost within seconds,and can be used to simulate the mechanical environment in fallout.

关 键 词：核爆烟尘 颗粒群 欧拉方法 空间传输 运动模拟 

分 类 号：TL91[核科学技术—核技术及应用] V41[航空宇航科学与技术—航空宇航推进理论与工程]