| 齐志扬,李向阳,罗温伟,汪弘,齐廷富.墙体涂料层氡运移规律数值模拟研究[J].南华大学学报(自然科学版),2022,(4):41~46.[QI Zhiyang,LI Xiangyang,LUO Wenwei,WANG Hong,QI Tingfu.Numerical Simulation Research on the Transport Law of Radon in Wall Coatings[J].Journal of University of South China(Science and Technology),2022,(4):41~46.] |
| 墙体涂料层氡运移规律数值模拟研究 |
| Numerical Simulation Research on the Transport Law of Radon in Wall Coatings |
| 投稿时间：2022-04-26 |
| DOI： |
| 中文关键词: 氡运移 数值模拟 涂料防氡 氡扩散 |
| 英文关键词:radon transport numerical simulation coating to prevent radon radon diffusion |
| 基金项目: |
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| 中文摘要: |
| 为探究涂料对墙体内氡析出的影响,建立了墙体涂料单层多孔介质模型,开展涂料层氡运移特征研究。结果表明:1)其他条件一定时,涂料层内氡浓度与其扩散系数呈负相关,扩散系数为8×10－9 m2/s时,涂料表面氡浓度最少；2)涂料层扩散系数一定时,涂料层内氡积累量与其厚度成正相关,当涂料厚度为4 cm时,氡浓度变化率开始变小达到拐点,此时涂料的控氡性能已基本达到最优状态；3)涂料内浓度分布与涂层厚度具有明显的单指数函数关系。 |
| 英文摘要: |
| In order to explore the effect of coatings on radon precipitation in walls, this paper establishes a single-layer porous media model for wall coatings and conducts research on the characteristics of radon transport in the coating layer. The final result shows:(1) When other conditions are constant, the radon concentration in the coating layer has a negative correlation with its diffusion coefficient; when the diffusion coefficient is 8×10－9 m2/s, the radon concentration on the coating surface is the least. (2) When the diffusion coefficient of the coating layer is constant, the amount of radon accumulated in the coating layer is positively related to its thickness; when the coating thickness is 4 cm, the rate of change of the radon concentration begins to decrease and reaches the inflection point. At this time, the radon control performance of the coating has basically reached the optimal state. (3) The concentration distribution in the coating has an obvious single exponential function relationship with the coating thickness. |
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