大型浅水湖泊水动力特性数值分析

准确模拟太湖水流动态变化特性及水动力特征对模拟、预测污染物迁移转化规律以及理解水流运动与污染物相互作用机制具有重要的实用价值。以环境流体力学(EFDC)模型为基础,收集2009年-2010年水文、气象数据及湖区地形数据,并考虑引江济太工程对湖区的影响,建立符合太湖湖区水流特性的水动力模型。模型模拟结果表明最大风向、最大风速的组合方式模拟出来的流场情况最接近真实湖体流场,引江济太工程对湖流的影响微小,模型的水动力模拟效果良好。

Numerical analysis of Hydrodynamic Characteristics of Large-scale Shallow Lake

Accurate simulation of dynamic change of water flow and hydrodynamic characteristics is of important significance for predicting the migration and transformation of pollutants and understanding the interactions between water flow and pollutants. In this study, a hydrodynamic model was developed based on the EFDC model to simulate the water flow characteristics of Taihu Lake in light of the collected hydrological, meteorological, and terrain data from 2009 to 2010 and the effects of implementation of the Water Transfer Project from Yangtze River to Taihu Lake. The model results showed that the combination of maximum wind direction and wind speed can generate the flow field close to the actual conditions, and the effects of the Water Transfer Project from Yangtze River to Taihu Lake on the water flow of Taihu Lake are insignificant. The model shows good simulated hydrodynamic results.