Considering fundamental hydraulics, fluid dynamics, and experimental analysis should be analyzed simultaneously with mathematical methods due to the effects of hydraulic properties such as meandering form, sediment, and so on. In this research, to reveal the effects of hydraulic characteristics and longitudinal and transverse coefficients based on the two-dimensional advection-dispersion equation, a laboratory experimental channel has been conducted and analyzed. Additionally, results of experiments have been compared with horizontal two dimensional distributions of flow velocity and concentration fields with respect to the water depth and inlet discharge using two-dimensional depth-averaged numerical models based on FEM (Finite Element Method). SMS and RAMS have been applied with the same experimental conditions and compared. From the analysis of velocity profiles, primary and secondary flows have been visualized. Also the result of pollutant clouds illustrated from the results of tracer tests with an instantaneous and centered injection of solute transport, separation, superposition and stagnation could be deduced outwards of two meandering sections. And same types of characteristics of velocity and pollutant transport could be defined with two-dimensional numerical models.

中文翻译：

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弯曲通道内主要流动模式和混合的实验和数值研究

考虑到基本水力学，由于水力特性（例如曲折形式，沉积物等）的影响，应使用数学方法同时分析流体动力学和实验分析。在这项研究中，为了揭示基于二维对流扩散方程的水力特性以及纵向和横向系数的影响，已经进行了实验室实验通道的分析。另外，利用基于有限元法的二维深度平均数值模型，将实验结果与流速和浓度场相对于水深和进水口的水平二维分布进行了比较。SMS和RAMS已在相同的实验条件下应用并进行了比较。通过分析速度曲线，可以看到一次和二次流动。从示踪剂测试结果说明的污染物云的结果，可以瞬时和集中地注入溶质的运输，分离，叠加和停滞，可以从两个弯曲的部分向外推导。二维数值模型可以定义相同类型的速度和污染物迁移特征。