Document Type : Research paper
Authors
1 Department of Physics, Payame Noor University, Tehran, IRAN
2 Department of Physics, Payame Noor University
3 Department of physics, Payame Noor University, Tehran, IRAN
Abstract
Radon is a radioactive gas that nowadays is considered one of the most harmful natural factors in residential areas all over the world. After cigarettes, radon gas is considered to be the biggest cause of lung cancer. Therefore, it is very important to study the measurement of radon concentration in different parts of the building. In this research, by choosing a sample building, the distribution of radon concentration in different regions is modelled by using Computational Fluid Dynamics (CFD) in two conditions, non-ventilation and natural ventilation. Then the results measured by a continuous work radon detector have been compared in a similar condition. Also, to confirm the results, the average radon concentration in the building and for different conditions was compared with the data obtained from the analytical method. The results show that the modelling performed in a non-ventilation method with an error of less than 16% is consistent with the experimental data. Also in natural ventilation conditions, the experimental results confirm the numerical modelling results. On the other hand, the results derived from the analytical solution in both non-ventilation and natural ventilation conditions confirm the results obtained from the simulation of the distribution of radon concentration. Our emphasis on this study is to determine the proper location of sleeping, sitting, and standing in a building, to reduce the dose received from radon gas.
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