以松江河梯级水电站石龙大坝溢流坝段为例,利用流体力学数值分析软件Fluent,并结合有限体积法、RNG k-ε紊流模型和流体体积分数方法,对三种库水位下不同弧形闸门开度进行了三维数值模拟,获得了各工况的泄流量,通过与理论计算值进行对比,验证了数值模拟方法的可靠性,进而对试验水位下检修闸门断面的速度场及过坝水流的水面形态进行了数值计算,可为现场试验设计提供参考依据。 Taking the Shilong dam spillway section of Songjianghe Cascade Hydropower Station as an example, with the help of Fluent, a numerical simulation software for fluid dynamics and a combination of finite volume method, RNG k-ε turbulence model and fluid volume fraction method, The three-dimensional numerical simulation of the opening of the arc gate was carried out. The discharge of each working condition was obtained. The reliability of the numerical simulation method was verified by comparison with the theoretical calculation. Then the velocity field of the cross-section of the inspection gate under the test water level was over The water surface morphology of the dam is numerically calculated, which can provide reference for the field test design.