Radon assessment model using CFD simulation

被引：0

作者：

Araujo, Maria Rita Silva ^{[1
]}

dos Santos Jr, Jose Araujo ^{[1
]}

Fernandez, Zahily Herrero ^{[1
,2
]}

Amaral, Romilton dos Santos ^{[1
]}

da Rocha, Jussie Soares ^{[1
,3
]}

Rodriguez, Abel Gamez ^{[1
]}

Santos, Josineide Marques do Nascimento ^{[1
,2
]}

de Oliveira, Marcela Ferreira Marques ^{[1
]}

da Silva, Leandro Moreira ^{[1
]}

Azevedo, Andrey Jose Isidoro de Araujo Rodrigues ^{[1
]}

Mazaira, Leorlen Yunier Rojas ^{[1
]}

机构：

[1] Univ Fed Pernambuco, Ctr Technol & Geosci, Dept Nucl Energy, BR-50740545 Recife, PE, Brazil

[2] Univ Fed Pernambuco, Agreste Acad Ctr, BR-55014900 Caruaru, PE, Brazil

[3] Fed Inst Maranhao, Coelho Neto Campus, BR-65620000 Coelho Neto, MA, Brazil

来源：

RADIATION MEASUREMENTS | 2025年 / 187卷

关键词：

CFD; Dosimetry; Radioactivity; Radon; Simulation;

D O I：

10.1016/j.radmeas.2025.107478

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Radiometric studies on the influence of radon and its progeny have been intensified worldwide. Radon emanates from soil, rocks, and building materials, concentrating in enclosed or poorly ventilated areas. Inhaling this gas can harm human health due to its alpha emission and short-lived decay products, which can be deposited in lung tissues. Simulations with Computational Fluid Dynamics (CFD) to study radon distribution in indoor environments is quite advantageous in terms of cost and response time compared to conventional experiments, allowing a better understanding of radon levels dispersed in the air and enabling the estimation of short and long-term individual exposure. The study aimed to determine the behavior of radon in a controlled environment with a high radioactive background, using CFD modeling through Ansys CFX software. The investigation was conducted in the sample storage room of the Radioecology Group, belonging to the Department of Nuclear Energy of the Federal University of Pernambuco. This room was selected due to its high radioactive background, which was caused by the presence of environmental radioactive samples. In the study, a physical-mathematical model was constructed, and a 3D graphic platform was generated, confirming the dispersion of this radionuclide in the sampling environment. The simulation results were compared with those obtained experimentally using the AlphaGUARD detector. As theoretically predicted, the CFD simulation with ANSYS CFX indicated that the areas with the highest radon concentration are close to radioactive sources. It is worth noting that the developed model has a qualitative character, allowing the analysis of the radon dispersion tendency in the environment and identifying regions where the gas accumulates. Although it did not accurately reproduce the absolute concentration values measured experimentally, the model proved adequate to represent the spatial distribution of radon under controlled conditions and is viable for validating behavior.

引用

页数：12

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