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采用B型交错网格布置物理量,引入动边界扫描技术建立了曲线坐标系下的施工导截流二维水流数学模型。采用贴体坐标变换,将复杂的物理域变换成规则的计算域,在计算域上采用控制容积法离散方程,并运用SIMPLEC算法求解,使计算的流场更符合实际流场。采用白石窑水电站施工导流模型试验的实测资料对模型进行验证,计算结果与实测资料吻合较好,表明该模型可用于施工导截流的水力计算。
B-type staggered grid layout of physical quantities, the introduction of dynamic boundary scan technology to establish a two-dimensional flow mathematical model of the construction of diversion and closure flow in the curve coordinate system. The body coordinate transformation is applied to transform the complex physical domain into a regular calculation domain. The discretization equation of the control volume method is adopted in the calculation domain, and the SIMPLEC algorithm is used to solve the problem so that the calculated flow field can be more in line with the actual flow field. The model is verified by the measured data of the construction diversion model test of Baishiyao Hydropower Station. The calculated results are in good agreement with the measured data, which shows that the model can be used to calculate the hydraulic pressure of the construction diversion and river closure.