摘要
针对以往把整个混合层作为大气扩散研究对象的问题,研究了大气地面污染带概念,建立了大气污染模拟模型。又考虑到目前大气污染模型仅注重研究铅直面上的二维扩散变化,而较少研究平面二维扩散问题,运用有限差分方法建立了大气地面污染带的平面二维数值模型。通过应用证实,该大气污染模拟模型能够真实反映近地面大气中污染物的扩散趋势及空间分布特征,对城市大气环境污染预测和防治具有实际意义。
Be aim at formerly study problems that the entire mixed layer is regarded as the research object of the atmospheric diffusion, the concept of near-ground atmospheric pollution belt was studied, and the atmospheric pollution simulation model was established. At present, the two-dimensional diffusion only in the vertical is paid great attention in the aspect of the atmospheric pollution model, but in the plane that is seldom studied. By the finite difference method, the plane two- dimensional numerical model of the near - ground atmospheric pollution belt is established. Through the application, it can be confirmed that the model can really reflect the pollutant diffusion tendency and the spatial distribution characteristic in the near-ground atmosphere, which has important practical significance to the forecast, the prevention and cure of the city atmospheric pollution.
出处
《河北工程大学学报（自然科学版）》
CAS
2007年第1期61-63,73,共4页
Journal of Hebei University of Engineering:Natural Science Edition
基金
河北省博士基金(03547012D)
河北省教育厅博士基金(B2001111)
关键词
大气地面污染带
模拟模型
数值模型
平面
二维扩散
air ground pollution belt
simulation model
numerical model
the plane
two-dimensional diffusion
