【摘要】 采用一二维耦合模型来研究三峡水库水温分布。以垂向一维模型计算结果作入口边界条件,对库首50km区域采用立面二维k-ε水温模型进行预测。结果显示:三峡水库在4～6月可能存在较为明显的温度分层,下泄水温出现滞温现象。耦合模型由于一、二维计算连接中带入的误差尚无法定量分析,需取得实测资料后做进一步的研究。更多还原

【Abstract】 This paper explores to use 1D and 2D coupling model in the temperature prediction of Three-Gorge reservoir. With the boundary condition provided by the vertical 1D temperature model, 2D laterally-averaged k-ε model is adopted in the 50 km area near the dam. The results show that strong thermal stratification exists from April to June for Sanxia reservoir, and the outflow temperature delay is obvious. The error of the coupling model from the connection between 1D and 2D model can not be quantified now, further study with field measurement data is needed.更多还原