Non-uniformity of the indoor radon concentration under a convective mixing mechanism

Sergey Spotar; Nurlan Ibrayev; Aigerim Uyzbayeva; Jamil Atabayev

doi:10.3390/ijerph15122826

Non-uniformity of the indoor radon concentration under a convective mixing mechanism

Sergey Spotar, Nurlan Ibrayev, Aigerim Uyzbayeva, Jamil Atabayev

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

This paper focuses on the results of computational fluid dynamics (CFD) modeling of radon concentration distribution in living areas within residences. The COMSOL Multiphysics® 5.3 software package has been employed for solving coupled momentum and species transport problems together with pseudo-reaction term modeling of the radon radioactive decay process. The reliability and verification of the simulation model was tested by comparing with available experimental data. The obtained results show the existence of stagnant zones where the concentration of radon is substantially higher than the average values. The impact of factors such as wind velocity, air tightness, and incoming radon flux were taken into consideration.

Original language	English
Article number	2826
Journal	International Journal of Environmental Research and Public Health
Volume	15
Issue number	12
DOIs	https://doi.org/10.3390/ijerph15122826
Publication status	Published - Dec 2018

Keywords

CFD
Concentration
Convection
Diffusion
Radon

ASJC Scopus subject areas

Public Health, Environmental and Occupational Health
Health, Toxicology and Mutagenesis

Access to Document

10.3390/ijerph15122826

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title = "Non-uniformity of the indoor radon concentration under a convective mixing mechanism",

abstract = "This paper focuses on the results of computational fluid dynamics (CFD) modeling of radon concentration distribution in living areas within residences. The COMSOL Multiphysics{\textregistered} 5.3 software package has been employed for solving coupled momentum and species transport problems together with pseudo-reaction term modeling of the radon radioactive decay process. The reliability and verification of the simulation model was tested by comparing with available experimental data. The obtained results show the existence of stagnant zones where the concentration of radon is substantially higher than the average values. The impact of factors such as wind velocity, air tightness, and incoming radon flux were taken into consideration.",

keywords = "CFD, Concentration, Convection, Diffusion, Radon",

author = "Sergey Spotar and Nurlan Ibrayev and Aigerim Uyzbayeva and Jamil Atabayev",

note = "Funding Information: Funding: This research was carried out at the Laboratory of Green Energy and Environment of National Laboratory Astana, PI and funded under the Agreement number №144-2018//010-2018 dated 12.02.2018, project -{\textquoteleft}Assessing the impact of ventilation systems on the concentration of radon in buildings in Kazakhstan{\textquoteright}.",

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AU - Ibrayev, Nurlan

AU - Uyzbayeva, Aigerim

AU - Atabayev, Jamil

N1 - Funding Information: Funding: This research was carried out at the Laboratory of Green Energy and Environment of National Laboratory Astana, PI and funded under the Agreement number №144-2018//010-2018 dated 12.02.2018, project -‘Assessing the impact of ventilation systems on the concentration of radon in buildings in Kazakhstan’.

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N2 - This paper focuses on the results of computational fluid dynamics (CFD) modeling of radon concentration distribution in living areas within residences. The COMSOL Multiphysics® 5.3 software package has been employed for solving coupled momentum and species transport problems together with pseudo-reaction term modeling of the radon radioactive decay process. The reliability and verification of the simulation model was tested by comparing with available experimental data. The obtained results show the existence of stagnant zones where the concentration of radon is substantially higher than the average values. The impact of factors such as wind velocity, air tightness, and incoming radon flux were taken into consideration.

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