摘要
本文应用射线方法(即一阶偏微分方程的特征线方法)求解浅水流动中对流一扩散问题小参数渐近展开的一级近似方程,并用这个方法计算天然河流中污水多点排放形成的污染浓度分布.计算结果与实测数据作了比较.
In this paper, a ray method (i. e. a method of characteristics for solving first-order partial differential equations) is applied to find the first- order asymptotic solution of the depth- averaged advection- diffusion equation. This method is used to calculate the concentration distribution of a multi-point discharged contaminant in a natural stream. The calculated results are compared with the on-the-spot measurements in the river.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
1994年第4期395-403,共9页
Chinese Journal of Hydrodynamics
基金
"八五"国家科技攻关项目子课题
关键词
射线方法
多点定常排污
污染浓度分布
河流污染
depth- averaged advection-diffusion equation
asymptotic expansion for a small parameter
ray method
multi-point discharge
distribution of contaminant concentration.
