摘要
针对环境水流对河道取水口的干扰,基于有限体积法和结构化网格,利用Realizableκ-ε紊流模型模拟河道取水口在运行过程中的引水状态,并引入流速比分析近场流速对取水口引水特性的影响。结果表明,环境流速严重影响取水口外沿进流流速的分布均匀度,流速比愈小,流速分布愈均匀。同时竖管内的汇流状态和取水口输水效率也严重依赖于流速比的变化。
To solve environmental flow disturbance to water intake in the river,using the finite volume method and structured grid,Realizableκ-εturbulence model is adopted to simulate the water intake operation during the diversion condition.And then velocity ratio is used to analyze the impact of near-field flow rate on water intake operational feature.The results show that near-field rate affect the uniformity of the edge flow rate distribution in the water intake significantly;the smaller velocity ratio,the more uniformity of the flow rate distribution is;while the water convergence in the standpipe and conveyance efficiency is also rely on the change of velocity ratio.
出处
《水电能源科学》
北大核心
2015年第10期88-91,共4页
Water Resources and Power
关键词
取水口
近场流速
水力特性
流速比
water intake
near-field flow rate
hydraulic characteristics
velocity ratio
