Three dimensional numerical simulation of field tracer experiment for atmospheric dispersion around a domestic nuclear power plant
WANG Bo1, LUAN Hai-yan1, WU Han1, XIONG Wen-bin1, CHEN Lu1, HE Wei1, ZHANG Qiong1, YAN Jiang-yu2, HAO Hong-wei2
1. Nuclear and Radiation Safety Center, Ministry of Environmental Protection, Beijing 100082, China; 2. China Institute for Radiation Protection, Taiyuan 030006, China
Abstract：To further analyze the characteristics of atmospheric dispersion around a domestic coastal nuclear power plant on the basis of field tracer experiments, Fluidyn-PANACHE, a Computational Fluid Dynamics (CFD) software, was used to create a refined atmospheric dispersion simulation system that is capable of simulating field tracer experiment. More reasonable simulation for tracer's peak concentration and plume width at each downwind sampling arc, closer to real dispersion status at near field with undulate terrain, and approximate real time simulation under continuous variation of wind direction based on the steady simulation can be obtained by CFD mode compared to Gaussian mode. The statistical analysis for bias of numerical simulations indicated that both the statistical performance indices of CFD steady simulation and Gaussian simulation were within internationally accepted ranges and moreover, random bias of CFD simulation was superior to that of Gaussian simulation. It was concluded that CFD simulation can be utilized to assist and optimize field tracer experiments for other nuclear power plants so as to improve efficiency and pertinence of nuclear safety regulation.
王博, 栾海燕, 吴晗, 熊文彬, 陈鲁, 何玮, 张琼, 闫江雨, 郝宏伟. 核电厂野外示踪试验的三维数值模拟研究[J]. 中国环境科学, 2016, 36(10): 2950-2956.
WANG Bo, LUAN Hai-yan, WU Han, XIONG Wen-bin, CHEN Lu, HE Wei, ZHANG Qiong, YAN Jiang-yu, HAO Hong-wei. Three dimensional numerical simulation of field tracer experiment for atmospheric dispersion around a domestic nuclear power plant. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(10): 2950-2956.
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