坝前区域3维水温数值模拟研究  

Numerical Study on the 3-D Water Temperature in the Reservoir Region Adjacent to a Dam

作　　者：张新华[1] 李冰冻[1] 魏文杰[1] 王佳[1] 张小霞[1] 

机构地区：[1]四川大学水力学与山区河流开发保护国家重点实验室,四川成都610065

出　　处：《四川大学学报（工程科学版）》2016年第2期14-20,共7页Journal of Sichuan University (Engineering Science Edition)

基　　金：国家自然科学基金资助项目(51379137;51579162;81200781)

摘　　要：为避免大型水库低温下泄对下游水生生物或灌区农作物造成不利影响,准确预测水库的坝前水温分布十分必要。为此,采用3维水温紊流数学模型,以横向平均的2维水温模型的计算结果作为3维模型的入流边界条件和初始条件,以已建成的二滩水库坝前1 km范围内的水体为研究对象,进行3维水温的数值模拟验证。将模拟计算的水温结果与实测的水温结果进行对比分析,结果表明,采用作者提出的方法能够较好地模拟坝前深水库区的水体水温分层流动和进水口前的水体流动特性。To avoid any adverse influences on the downstream aquatic lives or agricultural production due to low-temperature water discharging from a large reservoir,it is necessary to predict accurately the stratified water temperature distributions in the deep water region before a high dam. The 3-D turbulence mathematical model was proposed to simulate water temperature with the boundary condition and the initial condition obtained from a 2-D turbulent water temperature model. A case study was conducted at the constructed Ertan reservoir within a range of 1 km from the dam. A comparison analysis was conducted between water temperature from the simulation model and the site observations. The simulation of water temperature fits with the observation quite well. Therefore,the proposed 3-D turbulent mathematical model can satisfactorily predict the stratified water temperature and the flow structures within the deep reservoir in front of the dam.

关 键 词：水库 水温 数值模拟 3维流动 

分 类 号：TV641[水利工程—水利水电工程]