山区水库水温预测及影响因素  

Prediction of mountain reservoir water temperatures and influential factor analysis

作　　者：张志成[1] 汪卫明[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2013年第5期610-614,共5页Engineering Journal of Wuhan University

摘　　要：山区水库的库区地形变化大、水文气象资料不足,对其水库水温进行准确预测的难度较大.结合老挝南俄河上的某山区水库,建立二维立面模型,基于FLUENT软件实现了水库水温预测,并对库区太阳短波辐射沿程分布及入流水温纵向分布等重要边界条件的取值方法进行了探讨.研究结果表明,库区太阳短波辐射可以按照沿程水面宽度与坝前水面宽度的比值进行折减取值;入流水温纵向分布可以采用分段函数,取值宜通过监测资料反馈分析确定.As the mountain reservoir area＇s terrain changes a lot and the hydrological and meteorological da- ta are incomplete, it is difficult to predict reservoir water temperature accurately. Combined with a moun- tain reservoir on Laos Nam Ngum River, a two-dimensional facade model is established, to forecast the reservoir water temperature based on FLUENT. The value of important boundary conditions, which con- cludes the distribution of shortwave radiation along the reservoir and the vertical distribution of inflow wa- ter temperature, is also discussed. The results show that, the value of shortwave radiation should be dis- counted in accordance with the ratio of the surface width along the reservoir and the surface width in front of the dam. It also turns out that the vertical distribution of inflow water temperature can use piecewise function, which is determined through the analysis of the monitoring data feedback.

关 键 词：山区水库 水温 预测 反馈 

分 类 号：TV62[水利工程—水利水电工程]