基于多重蒙特卡罗方法的核爆放射性粒子形成模拟研究

Research on Simulation of Radioactive Particles Formation in Nuclear Explosion Based on Multi-Monte Carlo Method

建立核爆火球中放射性粒子的形成模型,用多重蒙特卡罗方法求解通用动力学方程,模拟核爆炸火球中成核、冷凝和凝并作用下放射性粒子的形成演变过程。初步的计算结果与相关研究者的理论分析和试验采样数据对照比较差别很小,说明了模型的合理性和方法的可行性。为进一步完善模型和参数研究打下基础。

This research constructs a model on radioactive particles formation in nuclear explosion fireball. The evolution processes of radioactive particles in the condition of nucleation, condensation and coagulation in nuclear explosion fireball are simulated through solving GDE by MMC method. Compared with the theoretical analysis and experimental sampling data, the preliminary result is not bad. It implies the reasonability of the model and the feasibility of the method, and lays the groundwork for improving the model and the study of parameters.