水资源保护2012，Vol.28Issue(4)：28-32,5.DOI:10.3969/j.issn.1004-6933.2012.04.006
水库下游河道水温沿程分布的解析解及与其他方法的比较
Analytical solution of water temperature distribution in river downstream of reservoir and comparison with another method
摘要
Abstract
With consideration of the temperature gradient in the flow direction, an analytical solution was deduced using a one-dimensional water temperature control equation, based on the assumption that the heat exchange over a unit surface area is constant along the river. This method was compared in detail with a simplified model for computing river temperature, which is commonly used in China. The results show that the deduced analytical solution had high accuracy, and could well simulate the temperature recovery process in the river downstream of the reservoir. A case study was conducted in the Bailianya Reservoir. Based on prediction of the water temperature structure of the Bailianya Reservoir, the deduced analytical solution was used to predict the water temperature distribution in the lower reach of the Bailianya Reservoir, and the influences of the water temperature distribution on the reservoir' s surrounding environment were analyzed. There has been a low temperature in the lower reach of the Bailianya Reservoir, where the water is unsuitable for irrigation of crops on both banks and for growth and propagation of fish. It is necessary to transfer suitable water to the croplands for irrigation. The region that is suitable for growth and propagation of fish needs to be moved downstream.关键词
白莲崖水库/下游河道/水温计算/一维水温控制方程Key words
Bailianya Reservoir/downstream river/water temperature calculation/ID water temperature control equation分类
天文与地球科学引用本文复制引用
刘军英,贾更华,韩龙喜,李小虎,孙娟..水库下游河道水温沿程分布的解析解及与其他方法的比较[J].水资源保护,2012,28(4):28-32,5.基金项目
水利部公益性行业科研专项经费项目(201001028) （201001028）
