Nuclear Techniques ›› 2016, Vol. 39 ›› Issue (5): 50603-050603.doi: 10.11889/j.0253-3219.2016.hjs.39.050603

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Numerical simulation to dispersion of radioactive airborne effluents in near-field of 2-MW TMSR-LF1

LYU Xiaowen1,2, CHEN Changqi1,2, XIA Xiaobin1, HE Jie1,2, ZHANG Zhihong1, CAI Jun1   

  1. 1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Jiading Campus, Shanghai 201800, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2016-01-19 Revised:2016-03-15 Online:2016-05-10 Published:2016-05-12
  • Supported by:

    Supported by Strategic Priority Research Program of Chinese Academy of Sciences(No.XDA02005004)

Abstract:

Background: Dispersion of radioactive airborne effluents in the near field is an important content of environment impact assessment of nuclear facilities. Due to the effect of complex building, the Gaussian plume model is not suitable for simulation of atmospheric dispersion in near field. Purpose: This paper attempts to analyze the atmospheric dispersion factors in near-field area of 2-MW liquid-fueled molten salt experimental reactor(TMSR-LF1) and provide data for environment impact assessment. Methods: Based on the building layout of proposed site of TMSR-LF1, the distribution of atmospheric dispersion factors were calculated by using method of Computational Fluid Dynamics(CFD) and the influences to the distribution of different factors were analyzed. Results: For elevated emission, because of the plume rise, the greater the wind speed is, the higher the concentration is in near field area; the pollutant accumulation areas will be prone to present at upwind side of buildings along the direction of wind. Conclusion: All these provide important data for nuclear emergency, and environmental impact assessment for TMSR-LF1.

Key words: TMSR-LF1, Atmospheric dispersion, Near-field simulation, CFD

CLC Number: 

  • TL75