Vol.16, No.3, 2020, pp.651-663, doi:10.32604/fdmp.2020.07981
OPEN ACCESS
ARTICLE
Convection-Diffusion Model for Radon Migration in a Three-Dimensional Confined Space in Turbulent Conditions
  • Shengyang Feng1,2,3,*, Dongbo Xiong4, Guojie Chen5, Yu Cui1, Puxin Chen1
1 School of Resource Environment and Safety Engineering, University of South China, Hengyang, 421001, China
2 Hunan Province Engineering Technology Research Center of Uranium Tailings Treatment, Hengyang, 421001, China
3 Hunan Province Engineering Research Center of Radioactive Control Technology in Uranium Mining and Metallurgy, Hengyang, 421001, China
4 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China
5 School of Civil Engineering, University of South China, Hengyang, 421001, China
* Corresponding Author: Shengyang Feng. Email: 14100044@usc.edu.cn
(This article belongs to this Special Issue: The Progress in Building Indoor Air Quality: Indoor Airflow and Pollutant Control)
Received 17 July 2019; Accepted 14 March 2020; Issue published 25 May 2020
Abstract
Convection and diffusion are the main factors affecting radon migration. In this paper, a coupled diffusion-convection radon migration model is presented taking into account turbulence effects. In particular, the migration of radon is simulated in the framework of the k-ε turbulence model. The model equations are solved in a complex 3D domain by the finite element method (FEM). Special attention is paid to the case study about radon migration in an abandoned air defense shelter (AADS). The results show that air convection in a confined space has a great influence on the radon migration and the radon concentration is inversely proportional to the wind speed.
Keywords
Convective diffusion; radon migration; turbulence; numerical simulation
Cite This Article
Feng, S., Xiong, D., Chen, G., Cui, Y., Chen, P. (2020). Convection-Diffusion Model for Radon Migration in a Three-Dimensional Confined Space in Turbulent Conditions. FDMP-Fluid Dynamics & Materials Processing, 16(3), 651–663.
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