核爆炸光辐射能量分布的模拟仿真研究  

Simulation research on energy distribution of light radiation from nuclear explosionHan

作　　者：韩小祥 李君 张欣 原林[1] 刘洋 王博宇 Xiaoxiang;Li Jun;Zhang Xin;Yuan Lin;Liu Yang;Wang Boyu(School of Science,Xi’an Polytechnic University,Xi’an 710048,China;Institute of Nuclear Science and Technology,Xi’an Technological University,Xi’an 710021,China)

机构地区：[1]西安工程大学理学院,西安710048 [2]西安工业大学核科学与技术研究院,西安710021

出　　处：《强激光与粒子束》2024年第7期115-126,共12页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(U2330109、61805212);陕西省自然科学基金项目(2022JQ-660、2020JQ-830)。

摘　　要：光辐射是核爆炸中能量的重要组成部分,因此研究其在空间中的热能分布规律具有重要的意义。根据核爆炸理论中火球的发展规律和光辐射的瞬时能量特征得到核爆炸光辐射的热能计算公式,该公式主要与爆炸高度、爆炸当量、大气衰减系数、火球半径和火球温度有关。首先,通过设计不同地图、改变核爆的相关参数进行模拟计算,分析了核爆炸光辐射热能的分布特点。然后,结合光辐射烧伤的伤情分级标准,在模拟程序中添加搜寻功能,实现自动对虚拟地图的伤情分级半径区域进行划分。最后,采用神经网络训练模拟数据,得到核爆的相关参数与地图伤情分级半径的映射关系,从而能够由核爆炸参数直接预测目标地图上的伤情分级半径,可大大缩短计算时间。Light radiation is a crucial component of the energy produced in nuclear explosion,making the study of its space distribution highly significant.This paper presents the derivation of a formula for computing thermal energy induced by the light radiation of a nuclear explosion.The derivation integrates the fireball development laws with the transient energy dynamics of light radiation.The resultant formula exhibits a dependency on several factors,including the height of the explosion,the yield of the explosion,atmospheric attenuation coefficients,as well as the radius and temperature of the fireball.By creating diverse maps and adjusting pertinent parameters,simulating calculations are conducted to elucidate the distribution patterns of the transient thermal energy from nuclear explosion light radiation.Furthermore,the burn injury grading standards are incorporated into the simulation by introducing a search function that autonomously categorizes the injury grading zones on the virtual map.What’s more,neural networks are employed to train the numerical models,aiming to discern the correlation between the parameters associated with nuclear explosions and the injury grading radius on the map.This innovative approach enables direct prediction of the injury grading radius based on nuclear explosion parameters,thus significantly shortens the calculation process.

关 键 词：核爆炸 光热辐射 神经网络 数值模拟 烧伤分级 

分 类 号：O381[理学—流体力学]