微尺度辐射环境影响评价软件系统开发  

Development and verification of the atmospheric dispersion model in microscale range for radioactive pollution

作　　者：许慧萍[1] 程卫亚[1] XU Huiping;CHENG Weiya(China Institute of Atomic Energy,Department of Radiation Safety,Beijing 102413 China)

机构地区：[1]中国原子能科学研究院,北京102413

出　　处：《中国辐射卫生》2022年第1期85-92,共8页Chinese Journal of Radiological Health

摘　　要：在城市街道及设施厂区等微尺度范围,由于大量的建筑物存在,其流场特征与扩散过程将会直接受到建筑物几何特征的影响,直线高斯烟羽模式将不再适用。基于雷诺平均的欧拉方法计算风场耦合拉格朗日粒子随机游走模式,建立放射性污染物的大气扩散模式,开发微尺度辐射环境影响评价软件系统,可用于厂区内或城市街道等放射性污染物的扩散行为。该系统的开发为今后从事微尺度辐射环境影响评价工作提供技术工具。Because of the complex buildings,the wind flow and the pollution diffusion will be affected in the microscale such as urban neighborhood or the site of facility,the straight Gaussian plume model will not be available.Based on the Reynolds-Averaged Naiver-Stokes(RANS)method which was used to calculate the wind field with the Lagrange particle random walking model,the radioactive pollution diffusion model and microscale radiation environmental impact assessment software system were developed.This system can be used in the factory or city streets and other similar conditions for simulating radioactive pollutants diffusion behavior.The development of the system will provide technical tools for the microscale radiation environmental impact assessment in the future.

关 键 词：微尺度 放射性污染物 环境影响评价 

分 类 号：X591[环境科学与工程—环境工程]