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为了解老龙口水利枢纽工程的竖缝与堰组合式鱼道的水力特性,采用RNGκ-ε湍流模型和VOF方法对该鱼道的水流结构特性及池室内主流、流速和紊动能进行了分析。结果表明,鱼道内水流结构稳定,竖缝处流速小于设计流速2.0m/s,且主流衰减明显,消能效果良好;同时兼具竖缝式和溢流堰式的特点,适合喜好各种水层的鱼类通过,尤其对喜跳跃鱼类非常有利,能满足过鱼对象的需求。
In order to understand the hydraulic characteristics of the combined fishline and vertical seam of Laolongkou water control project, the structural characteristics of flow field and the main flow velocity and turbulence energy in the pond were analyzed by RNG κ-ε turbulence model and VOF method. The results show that the structure of the water flow in the fishway is stable, the flow velocity at the vertical joints is less than the designed flow rate of 2.0m / s, and the main flow decays obviously and the energy dissipation effect is good. At the same time, it has the characteristics of vertical joints and weirs, Layers of fish through, especially for jumping fish is very beneficial, can meet the needs of fish objects.