一个垂直平均水流运动的边界通用程式Ⅰ.程式结构  

A General Program for Depth Averaged Flow Ⅰ Model Structure

作　　者：陈小红[1] 刘美南[1] MalhaniMAl 

机构地区：[1]中山大学城市与资源规划系 [2]英国东伦敦大学

出　　处：《中山大学学报（自然科学版）》1998年第6期97-101,共5页Acta Scientiarum Naturalium Universitatis Sunyatseni

摘　　要：采用一种破开算子和特征线方法，将垂直平均二维水流运动方程转化为一系列一维方程式，从而由特征有限差分法求解．该模式适用于河流、河口和海湾的平面二维水流或潮流模拟．为使模式在这些水域模拟中具有边界通用性，设计了一个包含实际水域可能出现的各种不同类型边界（共２８种）的边界信息库，并分别给出了计算域内点和各种边界的计算公式．Using a split operator approach and characteristic method, the depth averaged two dimensional (2D) flow equations are transformed into a series of one dimensional(1D) equations which are solved by a characteristic finite difference scheme. A boundary library containing 28 different types of boundaries is constructed on a rectangular grid to include any possible boundaries which may appear partly or simultaneously in real water fields. The formulae for calculations of interior nodes and boundaries are given. The boundary conditions and other input data required for modeling are designed as lookup tables.

关 键 词：通用程式 水动力模型 河流 明渠 水流运动 

分 类 号：TV133[水利工程—水力学及河流动力学] TV131.2