Journal of Radiation Research and Radiation Proces ›› 2018, Vol. 36 ›› Issue (3): 30702-030702.doi: 10.11889/j.1000-3436.2018.rrj.36.030702

• RADIATION INTERDISCIPLINARY RESEARCH • Previous Articles    

Study on offshore dispersion of radionuclides using computational fluid dynamic model

LIN Hanqing1,2, CHEN Chunhua1, ZHENG Xiaolei1, HE Tao1, HU Liqin1   

  1. 1. Key Laboratory of Neutronics and Radiation Safety, Institute of Nuclear Energy Safety Technology, Chinese Academy of Sciences, Hefei 230031, China;
    2. University of Science and Technology of China, Hefei 230027 China
  • Received:2018-02-26 Revised:2018-04-10 Online:2018-06-20 Published:2018-06-21
  • Supported by:

    Supported by National Natural Science Foundation of China (71671179), National Science and Technology Foundation Platform Project of MOST (DKA2017-12-02-17), and 13th Five-year Informatization Plan of Chinese Academy of Sciences (XXH13506)

Abstract:

A computational fluid dynamics (CFD)-based three-dimensional offshore radionuclide-dispersion model was established to simulate the distribution of radionuclide concentration. Variations in the simulated concentration of tritium released from the La Hague nuclear fuel reprocessing plant demonstrated good agreement with surface-monitoring data, thereby effectively validating the proposed method. In addition, an accuracy comparison and analysis were performed using MARS (Hydrodynamical model for applications at regional scale). The results showed that the calculation results of this model agreed well with the monitoring data in a small scale (<5 km). The error was controlled within 15%, and the simulation accuracy was slightly better than the MARS model. And results obtained reflected the ability of the proposed model to precisely simulate the radionuclide dispersion process performed in offshore waters with complex topography and hydrological conditions, thereby confirming its applicability in the prediction of the effects of radiation caused by nuclear accidents and/or conventional emissions. This would provide essential technical support during the decision-making process in the event of a nuclear emergency.

Key words: Radionuclide-dispersion model, Computational fluid dynamics (CFD), Offshore areas, Nuclear emergency response

CLC Number: 

  • TL732