反应堆退役三维辐射场实时计算及可视化

Real-time computation and visualization of 3D radiation field for nuclear reactor decommissioning scene

本文基于DELMIA和VIRTOOLS平台开发的反应堆退役三维仿真原型系统,提出了仿真系统、数据库和计算内核既相互独立又集成统一的三维辐射场计算和可视化技术方案。利用点核积分算法建立了三维辐射场计算模型,得到了能量的对数与转换系数的多项式拟合公式,考虑了设备屏蔽和自吸收效应。采用VS语言和SQL server软件平台编制了三维辐射场计算程序,经验证,在关键点处的辐射水平计算值与测量值的比值小于10,并嵌入了仿真系统,实现了退役场景三维辐射场的实时计算和数据更新。提出了基于行走路径的人员受照剂量计算方法,并实现了可视化显示。

A prototype 3D simulation system for reactor decommissioning based on the DELMIA and VIRTOOLS was built. Based on this simulation system,the 3D radiation field computation and visualization program were proposed by combining independent simulation system and database with computation core. Computation model of 3D radiation field was based on the point-kernel method and the polynomial fitting formula between energy logarithm and translation factor was acquired. In the model,the shielding and self-absorption of devices were considered,and the computing errors of the radiation level at key points were less than ten times of the measuring data. The computation software of 3D radiation field was programmed based on the software of VS and SQL server. Dynamic calculation and data refresh of 3D radiation field were realized. Computation model of personal dose based on walking path was proposed and visual display was realized.