高桩码头对河道流场影响的数值模拟

在讨论高桩码头对河道流场影响数值模拟方法的基础上，为确保流场模拟精度，采用正交边界拟合坐标变换法模拟弯曲变化的河道计算域，应用二维全隐式耦合联解模型离散控制方程、矩阵追赶法求解代数方程．同时引进过水率和修正糙率的概念并提出了间接等效模拟高桩码头对流场影响的方法．算例表明，该方法是行之有效的．

Numerical simulation of river flow patterns affected by standing pile wharf

Based on the analysis of numerical methods for simulation of river flow patterns affected by standing pile wharfs, the boundary fitted orthogonal coordinate system is used for simulation of the computation region with varying curved boundaries, and the full-implicit coupled solution model and matrix chase-after method are adopted to solve the algebraic equation. These means ensure the accuracy of calculation. By introduction of the concepts of overflowing rate and revised roughness, an indirect equivalent simulation method is proposed. Examples show that the method is effective.