摘要
提出了一种计算风向与线源成任意角时任意长地面线源大气扩散的简化模式。通过与数值积分方法计算结果的比较表明，模式的最大相对误差在风向与线源平行时最大，但不超过１８％。随风向与线源夹角的增大，相对误差迅速减小，当夹角大于５°时，已小于２％。为城镇公路网大气扩散的快速、准确模拟提供了新手段。
A line soure dispersion model is presented for estimating the concentration of pollutants from a roadway in free wind direction. The maximum theoretical relative error of the model is biggest when θ(wind direction/roadway orientation)=θ°; but less than 18%. The more the θ, the less the relative error. When θ>5°, the maximum relative error is less than 2%. The model provides a quick and accurate method for modeling atmospheric dispersion of urban highway net.
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1996年第5期354-358,共5页
China Environmental Science
基金
云南省应用基础研究基金
