摘要
对标准k-ε紊流模型进行浮力修正,建立了剖面二维及三维水库水温计算的浮力流模型并采用已建漫湾水库库区实测水温资料对模型进行了检验。将检验后的模型应用于瓯江滩坑水库的水温分布预测研究中,其中采用剖面二维模型进行全库水温分布预测,并为坝前三维模型提供进口边界;采用三维模型对近坝段水流结构以及水电站下泄水温进行精确模拟,从而实现下泄水温的精确模拟。根据计算结果,分析了水库建成后下泄水温与天然水温的差异,对比了各典型年不同电站开机组数和不同电站取水口高程条件下水库下泄水温的差别,为该电站取水口高程和机组运行方式的制定提供了一定的参考依据。
Based on the standard k-ε model, the vertical 2-D and 3-D buoyant flow model for simulating the water temperature in deep reservoir is developed. The developed model verified by the measured data of Manwan reservoir is used to predict the water temperature in Tankeng reservoir. With the boundary condition provided by vertical 2-D model, 3-D water temperature model is adopted to predict the temperature of discharged water. The simulated water temperature in different typical years is compared with the water temperature under natural condition. The results can assist in the decision of water intake elevation and operation of generating units and reservoir management for protection of the aquatic environment.
出处
《水力发电学报》
EI
CSCD
北大核心
2008年第5期123-129,共7页
Journal of Hydroelectric Engineering
基金
科技部"973计划"(2003CB415203)
关键词
环境水力学
水库水温
数学模型
浮力流k-ε模型
下泄水温
environmental hydraulics
water temperature in reservoir
mathematical model
buoyant flow model
temperature of discharged water
