保水堰局部水头损失系数的数值模拟

Numerical simulation of local head loss coefficient for water-keeping weir

保水堰是分段低压输水管道中一种新型的衔接水工建筑物。文中采用VOF方法与标准k-ε紊流模型相耦合,对保水堰的流场进行了数值模拟,计算出了保水堰的局部水头损失系数。为南水北调工程天津干线的设计提供了依据。

Water-keeping weir is a new hydraulic linking structure for the stepped low-pressure delivery pipeline. By coupling VOF method and standard κ-ε turbulence model, the flow field of water-keeping weir is simulated and the local head loss coefficient of water-keeping weir is obtained; from which some design bases for the design of Tianjin section on the main channel of the South to North Water Transfer Project are provided.