基于点核积分与体积网格化的三维辐射场快速计算软件开发  

Development of 3D Radiation Field Fast Calculation Software Based on Point Kernel Integration and Volume Meshing

作　　者：高津均 宋英明[1] 夏月 李超[1] GAO Jinjun;SONG Yingming;XIA Yue;LI Chao(School of Nuclear Science and Technology,Nanhua University,Hengyang 421001,China)

机构地区：[1]南华大学核科学技术学院,衡阳421001

出　　处：《核电子学与探测技术》2023年第5期948-954,共7页Nuclear Electronics & Detection Technology

摘　　要：基于点核积分与体积网格化相耦合的方法研究开发了三维辐射场快速计算软件。通过构建辐射场模型STL文件,确定体源与屏蔽介质模型,采用六面体网格算法离散复杂体源模型生成点源,进行点核积分计算,考虑体源的自屏蔽效应,得到辐射场剂量数据,通过与蒙特卡罗方法计算结果对比,单体源模型计算误差在10%以下,多体源模型计算误差可以降到20%左右,随着网格化的细分,误差会有所减小。该软件可应用于三维辐射场快速计算与剂量分析。Based on the coupling method of point kernel integration and volume meshing,a fast calculation software of three-dimensional radiation field is developed.By constructing the STL file of the radiation field model,the volume source and shielding medium model are determined.The hexahedral grid algorithm is used to discretize the complex volume source model to generate point sources,and the point kernel integral calculation is carried out.Considering the self shielding effect of the volume source,the radiation field dose data are obtained.Compared with the calculation results of the Monte Carlo method,the calculation error of the single source model is less than 10%,and the calculation error of multi-body source model can be reduced to about 20%.With the subdivision of the grid,The error will be reduced.The software can be applied to rapid calculation and dose analysis of three-dimensional radiation field.

关 键 词：点核积分 体积网格化 辐射场计算 

分 类 号：TL75[核科学技术—辐射防护及环境保护]