核事故下放射性核素多介质耦合弥散模型
A multi-medium coupling dispersion model of radionuclide in a nuclear accident
- 辐射研究与辐射工艺学报 2016年34卷第2期 页码：20801
- 作者机构：
1.中国科学院核能安全技术研究所 中国科学院中子输运理论与辐射安全重点实验室 合肥 230031
2.Key Laboratory of Neutronics and Radiation Safety, Institute of Nuclear Energy Safety Technology, Chinese Academy of Sciences, Hefei 230031, China
- 作者简介：
刘盼,女,1991年5月出生,2013年毕业于湖北大学,目前研究生在读,核能科学与工程专业,E-mail:pan.liu@fds.org.cn
党同强,博士,E-mail:tongqiang.dang@fds.org.cn
- 基金信息：中国科学院战略性先导科技专项(XDA03040000)资助
DOI：10.11889/j.1000-3436.2015.rrj.34.020801
中图分类号：
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刘盼, 党同强, 何鹏, 等. 核事故下放射性核素多介质耦合弥散模型[J]. 辐射研究与辐射工艺学报, 2016,34(2):20801.
Pan LIU, Tongqiang DANG, Peng HE, et al. A multi-medium coupling dispersion model of radionuclide in a nuclear accident[J]. Journal of Radiation Research and Radiation Processing, 2016,34(2):20801.
刘盼, 党同强, 何鹏, 等. 核事故下放射性核素多介质耦合弥散模型[J]. 辐射研究与辐射工艺学报, 2016,34(2):20801. DOI： 10.11889/j.1000-3436.2015.rrj.34.020801.
Pan LIU, Tongqiang DANG, Peng HE, et al. A multi-medium coupling dispersion model of radionuclide in a nuclear accident[J]. Journal of Radiation Research and Radiation Processing, 2016,34(2):20801. DOI： 10.11889/j.1000-3436.2015.rrj.34.020801.
摘要
建立了高斯烟团模型与欧拉输运扩散模型的耦合模型,以实现放射性核素在大气以及水体中弥散的耦合。通过对大气和水体弥散模型进行对比,验证了各个模块的正确性。基于该模型,对中国铅基研究实验堆发生燃料组件熔化事故释放的,131,I进行仿真分析,对该核素在大气以及水体中的浓度分布进行评估。模拟结果表明:事故发生2 h后大气污染主要分布在10 km内,水域污染主要分布在10~20 km处;在该模拟条件下,铅基堆发生燃料组件熔化事故后对大气和水体造成的影响均低于国家限值。
Abstract
In order to predict the dispersion of radionuclides both in atmosphere and aquatorium, a new model was established to couple the Gaussian puff model and Eulerian model. The results of the coupling model presented good agreements with the references, which demonstrated the validity of all the modules. The coupling model was applied to simulate diffusion and concentration distribution of ,131,I in atmospheric and aquatic medium in the fuel assembly meltdown accident of China lead-based experiment reactor. The results showed that the distribution range of atmospheric pollutions was within 10 km 2 h after accident, meanwhile distribution range of aquatic pollutions was between 10 km and 20 km. Under the fuel assembly meltdown accident, the contaminant concentration in atmospheric and aquatic are still below the national standard limit.
关键词
多介质耦合弥散模型放射性核素中国铅基研究实验堆超级蒙特卡罗核计算仿真软件系统
Keywords
Multi-mediumCoupling dispersion modelRadionuclideChina lead-based research reactorSuperMC
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