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Simulating the Dispersion Behavior of Indoor Thoron Using Computational Fluid Dynamics (CFD)
MAPAN ( IF 1 ) Pub Date : 2022-04-29 , DOI: 10.1007/s12647-022-00557-2
Vandana Devi, R. P. Chauhan

Presence of indoor radon and thoron due to exhalation from soil and building materials has become increasingly recognized potential background radiation risk. This study presents the thoron behavior influencing indoor air quality in terms of concentration and distribution using the technique of computational fluid dynamics (CFD) in three dimensions. A model room of volume about 35 m3 was selected and the thoron is studied inside the domain where all walls act as source of thoron by exhalation process. Obtained thoron contours in the room show its inhomogeneous activity distribution. Thoron wall profile is also studied and shows the higher pollutant concentration near source. Results for thoron level and its distribution of the present simulation scenario agreed well with the analytical results. Stagnant zones where the level is higher than average concentration are found in the domain coinciding with corners which are not much influenced by the airflow profile. The study is important for estimation of health risk due to thoron by knowing its exact dispersion and helpful in mitigation strategies.



中文翻译:

使用计算流体动力学 (CFD) 模拟室内钍子的色散行为

由于从土壤和建筑材料中呼出的室内氡和钍气的存在,人们越来越认识到潜在的背景辐射风险。本研究使用计算流体动力学 (CFD) 技术在三个维度上展示了影响室内空气质量的钍气行为在浓度和分布方面。体积约35 m 3的样板间被选择并在所有墙壁通过呼气过程充当钍气源的域内研究钍气。房间内获得的钍气等值线显示其活度分布不均匀。还研究了钍气壁剖面,表明源附近的污染物浓度较高。钍气能级的结果及其在当前模拟情景中的分布与分析结果吻合得很好。在与受气流剖面影响不大的角落重合的区域中发现了水平高于平均浓度的停滞区域。该研究通过了解钍气的确切分布并有助于缓解策略,对于估计由钍气引起的健康风险非常重要。

更新日期:2022-04-29
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