摘要
应用无结构网格有限体积法 /Osher格式的二维水流 -水质耦合数值模型 ,采用黎曼近似解计算模拟区域水量、动量及污染物输送通量。通过对长江南京八卦洲江段浓度场的模拟计算 ,其结果与遥感卫星图片确定的污染带分布相吻合 。
A two dimensional finite volume method and Osher scheme flow pollutant coupled numerical simulation on an unstructured grid is adopted and adapted to fit the complex planar geometry of the computational domain and the requirements of the prediction and evaluation of aquatic environmental quality.Developed in the framework of the finite volume method on an unstructured grid,the model transforms a 2 D problem into a series of local 1 D problems.By employing Osher type approximate Riemann solver,the model estimates the numerical flux of variables across the interface between cells with high accuracy.It is applied to water quality simulation of the Nanjing Reach of the Changjiang River.The simulated pollution area matches pretty well with the remote sensing satellite images,validating reasonability and applicability of the model.
出处
《农村生态环境》
CSSCI
CSCD
北大核心
2002年第3期30-33,共4页
Rural Eco-Environment
