Gao Xueping, Li Guangning, Han Yunpeng
State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China.
ScientificWorldJournal. 2014;2014:979140. doi: 10.1155/2014/979140. Epub 2014 Jun 11.
Side-type orifice intake is a type of selective withdrawal facility used in managing reservoirs to mitigate the negative effects of low-temperature water. Based on the temperature data of a thermal stratified reservoir in China, an experiment was conducted in flume to study the influence of intake flow rate on withdrawn water temperature with different temperature distributions. Results indicated that withdrawn water temperature changed with different flow rates. The temperature change was determined by the water temperature gradients above and below the intake, whereas the change trend of temperature depended on the difference between the water temperature gradient above and below the intake. We likewise proposed a new equation with which the withdrawn water temperature of a thermal stratified reservoir using a side-type orifice could be calculated. These findings could be directly applied to the design and operation of side-type orifice intake in thermal stratified reservoirs.
侧式孔口取水口是一种用于水库管理以减轻低温水负面影响的选择性取水设施。基于中国某热分层水库的温度数据，在水槽中进行了实验，研究不同温度分布下取水流量对取水水温的影响。结果表明，取水水温随流量不同而变化。温度变化由取水口上下的水温梯度决定，而温度变化趋势取决于取水口上下水温梯度的差值。我们还提出了一个新方程，可用于计算使用侧式孔口的热分层水库的取水水温。这些研究结果可直接应用于热分层水库侧式孔口取水口的设计和运行。
