基于湍流扩散理论的氚大气弥散程序开发与校验  

Development and Verification of Tritium Atmospheric Dispersion Program Based on Turbulent Diffusion Theory

作　　者：聂保杰 倪木一[1] 廉超[1] 宋勇[1] 吴宜灿[1] 

机构地区：[1]中国科学院核能安全技术研究所,安徽合肥230031

出　　处：《原子能科学技术》2013年第B12期541-546,共6页Atomic Energy Science and Technology

基　　金：国家磁约束聚变能发展研究专项资助项目(2011GB111001;2013GB108005)

摘　　要：气态氚环境安全评价是聚变核安全的重要研究内容之一。本文基于大气湍流扩散理论的解析解模型,在TAS软件基础上使用MATLAB语言开发了聚变电站正常运行和事故工况下氚释放的大气弥散程序模块,分别与美国劳伦斯·利弗莫尔国家实验室(LLNL)的计算程序HotSpot3.0、德国卡尔斯鲁厄核研究中心(KfK)的UFOTRI进行了对比,并与加拿大恰克河国家核实验室的大气HT释放实验、美国萨凡那河工厂事故实验进行了校验。结果表明,TAS计算环境中气态氚的浓度具有合理性。通过对程序模型的分析,给出了烟羽模块和烟团模块的适用条件及各自的特点,为核应急提出了一种计算方法,对聚变环境安全评价具有一定的参考意义。The assessment about environmental safety of gaseous tritium is an important issue in the fusion nuclear safety field. Based on the solution of atmospheric turbulent diffusion model, a module of TSA to calculate tritium atmospheric distribution for acute and chronic releases was developed by using MATLAB. A series verification was finished, including the comparisons with the HotSpot3.0 developed by LLNL, UFOTRI developed by KfK, experimental results at Chalk River and Savannah River Plant. The results show that TSA is effective for the simulation of gaseous tritium distribution in the atmosphere. The main features of plume and puff model were discussed and a method for simulating nuclear accident emergency was proposed.

关 键 词：氚污染 高斯弥散模型 聚变核安全 

分 类 号：TL75[核科学技术—辐射防护及环境保护]