摘要
阶梯式溢流堰的体型设计直接影响其水力特性及下游消能设施的规模。结合凯乐塔水电站工程的水力学模型试验,选用3D紊流模型,采用VOF法对其阶梯式溢流堰流场进行了三维数值模拟,分析不同水力工况条件下坝面下泄水流水力参数,并与水力学模型试验所测数据进行对比分析。研究结果表明,合理布置阶梯式溢流面能减少过流流速,提高消能效果,缩短消力池长度。
For the stepped spillway,its hydraulic characteristics and the scale of the downstream energy dissipation facilities are directly affected by its shape. A three-dimensional（ 3D） numerical simulation is carried out on the stepped spillway of the Kaléta Hydropower Station with the 3D turbulent model and the VOF method. The hydraulic parameters of the discharging flow under different hydraulic conditions are analyzed and compared with the measured data from the physical model test. The results show that an appropriate shape of stepped spillway can reduce the flow velocity,improve the energy dissipation performance,and shorten the length of the stilling basin significantly.
作者
曾丹
李昊
陈鸿杰
ZENG Dan LI Hao CHEN Hongjie(School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430072, Chin)
出处
《水电与新能源》
2016年第10期13-17,共5页
Hydropower and New Energy
关键词
阶梯式溢流堰
消能率
水力特性
数值模拟
stepped spillway
energy dissipation
hydraulic characteristics
numerical simulation
