摘要
从三维对流-扩散方程出发,推导包含底泥污染的水质控制方程,并与浅水流动方程耦合,建立相应的浅水湖泊平面二维水流-水质-底泥污染的数学模型。运用伽辽金加权余量法推导出数学模型方程组的有限元公式,开发了实时二维水动力、水质模型。利用模型计算玄武湖混合流、水质动态变化过程,结果与实测值较吻合,从而为浅水湖泊混合流、包含底泥污染的水质模拟提供了一种可操作的新途径。
A water quality governing equation including sediment pollutions is derived based on the 3D advection-dispersion equation in shallow lakes. Coupled with the shallow water flow governing equations, a plane depth-averaged 2D flow-water quality-sediment pollution coupled model is developed. A finite element formulation is established by using the method of Galerkin weighted residuals. A 2D real-time model for flow-water quality is developed. The simulated the dynamic hydrologic and water quality process changes with time by using the developed model. The simulated results match the measured data well, which are proved reasonable. The study provides a new approach and a practical tool for admixture flow and water quality simulation with the sediment pollutions in the shallow lake.
出处
《水科学进展》
EI
CAS
CSCD
北大核心
2006年第4期496-501,共6页
Advances in Water Science
基金
国家自然科学基金重点资助项目(50239030)~~
关键词
浅水湖泊
混合流
平面二维数学模型
水流-水质-底泥污染模型
shallow lake
admixture flow
plane 2D mathematical model
couple model of flow-water quality-sediment pollut couple model
