摘要
基于三维浅水方程和溶解物质输运方程研究河口水库流动和水体交换。用实测水文资料对数值模型进行验证。利用该模型计算分析了不同风况以及水库引排水条件下水库水体流动特征,结果表明风对水库水闸附近的流场影响较小,但对整个库区流场会有一定影响。针对长江口青草沙水库上游水闸引水、下游水闸关闭或开启的两种运行模式,通过溶解物质浓度模拟并依据所定义的水体交换率,给出了换水率随时间的变化过程。可为制定合理的水库引排水方案,确保水库水质提供科学依据。
A numerical simulation of flows in an estuarine reservoir was studied with Delft-3D,which is based on three dimensional shallow water equations and solute transport equation.The model has been validated with the data of the measured velocity and water level in the Yangtze estuary.The flow pattern of wind-induced flow under the conditions of different wind kinds,schemes and directions were obtained and discussed in the reservoir.The process of changes of water quality was discussed in terms of solute transport in the reservoir.According to the defined water exchange rate,the efficiency of water exchange was analyzed in order to establish an efficient and sound operation scheme for the reservoir in the Yangtze estuary.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2011年第2期140-149,共10页
Chinese Journal of Hydrodynamics
基金
上海市重点学科专项基金资助项目(B206)
关键词
河口水库
数值模拟
风生流
流态
水质
estuarine reservoir
numerical simulation
wind-induced flow
flow patterns
water quality
