水库分层取水水温模型试验的相似理论

依据连续性方程、运动方程和能量方程，结合水库分层取水的流动特点，对水库水温模型试验的相似关系进行了理论分析，提出了模型和原型相似应满足的条件，以及模型与原型水温换算关系。依据所提出的模型相似理论，将二滩水电站物理模型试验的所测下泄水温转换成原型数据后，与原型实测资料进行对比，结果表明，两者吻合较好，验证了本文模型相似理论的正确性。研究成果可为开展水库分层取水下泄水温的试验研究提供理论基础。

Similarity theory of water temperature test model for selective withdrawal from reservoirs

Based on continuity equation, motion equation and heat balance equation, and considering the flow features of selective withdrawal, the similarity theory of water temperature test model was analyzed theoretically. The similarity conditions between model and prototype have been suggested. The relationship for conversion of water temperature between model and prototype has been proposed. According to the similarity theory established, a model experiment of water temperature was carried out, and the temperature of water released were measured, which were consistent with those in prototype, so the correctness of the similarity theory has been verified.