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首页> 外文会议>25th International Conference on Offshore Mechanics and Arctic Engineering 2006(OMAE2006) vol.4 >A NUMERICAL SHALLOW WATER MODEL BASED ON THE NON-ORTHOGONAL CURVILINEAR GRIDS
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A NUMERICAL SHALLOW WATER MODEL BASED ON THE NON-ORTHOGONAL CURVILINEAR GRIDS

机译：基于非正交曲线网格的数值浅水模型

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摘要

According to the transformation relationships between the Cartesian coordinates and the general curvilinear coordinates, the governing equations of the model are derived as the forms in the general curvilinear coordinates from those in the Cartesian coordinates. In the model, the contravariant velocities are adopted as the independent variables in non-orthogonal grids. The momentum equations keep strongly conservative forms and the boundary conditions can be given easily. The model used a staggered grid arrangement. The discrete equations are solved using the SIMPLIC algorithms. The numerical model has been validated against the bifurcated flow of which the diversion angle is 30 degree. Compared with the measured values, the numerical shallow water model is shown to be capable of simulating the water domains with irregular boundaries.
机译：根据笛卡尔坐标与一般曲线坐标之间的转换关系，从笛卡尔坐标中的模型得出控制曲线的形式，作为一般曲线坐标中的形式。在该模型中，采用逆速度作为非正交网格中的自变量。动量方程保持强烈的保守形式，边界条件可以轻松给出。该模型使用交错网格排列。使用SIMPLIC算法求解离散方程。针对分流角为30度的分叉流对数值模型进行了验证。与测量值相比，数值浅水模型显示出能够模拟具有不规则边界的水域。

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